You treat a sample of DNA with DNase and run the digested fragments out on an electrophoretic gel. You found mostly long fragments. What can you conclude about this sample of DNA

Answers

Answer 1

Answer:

the sample contains mostly heterochromatin  

Explanation:

Heterochromatin refers to a highly condensed state of DNA, whereas euchromatin is lightly packed. It is for that reason that heterochromatin is associated with a transcriptionally inactive state, whereas euchromatin regions are active for transcription. Heterochromatin regions resist DNases because these enzymes don't cut DNA randomly, but they show sequence preference. In consequence, highly repetitive DNA heterochromatin regions (e.g., centromeres, telomeres, etc) may exhibit resistance to DNA cleavage.


Related Questions

The total number of molecules of ATP produced during glycolysis is ______, which results in a net production of _____ ATP.

Answers

Answer:

The answer is "4 and 2 ".

Explanation:

The overall glycolysis ATP number is 4 of one hydroxyl group. In the first part of the glycolysis 2 ATP molecules are used, so that 2 ATP molecules are net gained. 2. In addition, 2 NADH atoms in the glycol are also created. This is why the total ATP molecules produced during metabolism are 4, resulting in a net output of 2 ATP.

Color blindness is a recessive sex-linked human trait. If a color-blind father and a mother with normal color vision have a color-blind son, what must be the mother's genotype?
A. XNXn
B. XNXN
C. XnYn
D. XNY

Answers

Answer:

A. XNXn

Explanation:

looks like it's a 50% chance of color blindness

A teacher gave the lab group shown below an "unsafe practice" warning. What is most likely the basis for the teacher's warning?

Answers

The teacher warning could be the practice you are about to do can harm you in some way if that careful. Please let me know if I'm understanding this.

State any two human activities that have a direct impact on soil formation​

Answers

Answer:

Nonetheless, some human activities have clear direct impacts. These include land use change, land management, land degradation, soil sealing, and mining. ... This in turn leads to loss of soil carbon and other nutrients and to changes in soil properties and in soil biodiversity.

This diagram summarizes a method to group land plants.

A diagram summarizes a method to group land plants. Plants are divided into 1 and 2. 2 is divided into 3 and 4. 4 is divided into 5 and 6.
Which row in the table best represents the evolution of plants that match the diagram?

Labels for Plant Classifications

1
2
3
4
5
6
A
Gymnosperms
Angiosperms
Seed plants
Seedless plants
Monocots
Dicots
B
Dicots
Monocots
Angiosperms
Gymnosperms
Seed plants
Seedless plants
C
Seed plants
Seedless plants
Angiosperms
Gymnosperms
Dicots
Monocots
D
Seedless plants
Seed plants
Gymnosperms
Angiosperms
Monocots
Dicots

Answers

Answer:

The correct answer is D.

Explanation:

The plants are grouped formally into 12 phyla (phylum plural) and are collected in four groupings. These four groupings are based on the history of the evolution of important plant characteristics:

Nonvascular plants evolved earliest. They are distinct from the algae because they preserve the embryo inside of the reproductive structure after fertilization. There is no vascular tissue, xylem, and phloem for these plants to convey nutrients, water, and food. For example, moose, liverwort, and hornworts. These plants do not grow very high without vascular tissue.Vascular seedless plants have evolved into non-vascular tissue but no seeds. The fern, fern, club moss, and horsetails are examples. These plants could grow larger with vascular tissue.Gymnosperms have evolved into seeds but have no blooms. For example, redwood, fir, and cypress trees. Gymnosperms. Gymnos in Greek means "naked"; the gymnosperm seeds are bare, not floral.Flowers or angiosperms have developed into vascular tissue, seeds, and flowers. Angiosperm for example includes magnolia, roses, tulips, and tomatoes.

Answer:

The correct answer is D.

Explanation:

In the Punnett square fill in the shaded boxes with the alleles of each parent use B for the dominant allele (black fur) and b for the recessive allele (white fur)

Answers

Answer:

Explanation:

Under the male put BB

Next to the female bb

then first row should be Bb Bb

second row should Bb Bb

Here, all the alleles of the black parent are dominant and are represented as BB, and those of the white parent are represented as bb, and they both are purebred dominant and recessive alleles that have produced all dominant black (Bb) offspring.

What is Punnett Square?

A Punnett square is a diagram used to predict the possible outcomes of a genetic cross between two parents. In this case, the parents have different alleles for a gene that determines the color of their fur. The dominant allele B produces black fur, while the recessive allele b produces white fur. The Punnett square is arranged in a grid, with each box representing one possible genotype for the offspring. The top row and left-hand column of the grid represent the alleles that each parent can contribute to their offspring. In this case, both parents are purebred,as expressed below.

Hence, black parents are dominant and are represented as BB, and those of the white parent are represented as bb, and have produced all dominant black offspring.

Learn more about the Punnett square here.

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Which layer of Earth has the highest temperatures at 5000-6000 Celsius?

Answers

Answer:

Inner Core

Explanation:

The inner core is the most inner layer of the earth. The inner core contains iron, the iron in the inner core is not pure (so not just iron) scientists believe it contains sulfur and nickel and also smaller amount of other elements. The inner core is extremely hot it is somewhere between 9000 and 13000 degrees Fahrenheit (5000 and 7000 degrees Celsius).  

explanation credit to: katnissdiv1 on weebly

A molecule of water is comprised of:
A. One atom of negatively charged hydrogen and one atom of positively charged oxygen.
B. One atom of negatively charged oxygen and one atom of positively charged hydrogen.
C. Two atoms of positively charged hydrogen and one atom of negatively charged oxygen.
D. Two atoms of negatively charged hydrogen and one atom of positively charged oxygen.

Answers

It’s option c.
But actually water has both covalent and ionic characteristics. It is 33% ionic and 67% covalent, so it’s not right to say that it’s made up of two positive H and an oxygen atom with negative charge.
With regards to four options given third is most relevant one.

Select which statements are a part of natural selection.

organisms better adapted to their environment tend to survive

organisms better adapted to their environment tend to reproduce and increase in number

organisms pass on their traits to succeeding generations.

over time, favorable traits become more common in a population

Answers

Answer:

organisms better adapted to their environment tend to reproduce and increase in number

Answer:   *organisms better adapted to their environment tend to survive

*organisms better adapted to their environment tend to reproduce and increase in number

*organisms pass on their traits to succeeding generations.

*over time, favorable traits become more common in a population

Explanation: all of them are correct :)

The muscle fibers within muscle cells are divided into myofibrils, which are further divided into _____, the contractile units of muscles.

Answers

Answer:

the answer is sarcomeres

All humans have shared biological needs, such as a need for food. However, in China people have an aversion to cheese, a food that is highly desired in the United States; and in the United States most people would find snake or dog meat inedible, even though both are enjoyed in China. How can this be explained

Answers

Answer:

The dietary differences between China and the US can be explained by the cultural, social and economic background that each of these countries had.

Explanation:

The main difference in food between countries is due to the culture of each country. This culture determines which elements are apt to be consumed and which are not. An example of this is dog food in China, which is very cultural, while the US and most Western countries do not welcome dog food because of its cultural context. Another example can be seen in the feeding of guinea-pig meat in Peru, however, other Latin American countries do not appreciate this type of meat.

The economic and social history of countries can also cause dietary differences. This is because these two factors change society and promote access to more modern and archaic foods.

Which of the following do all living things share?
A. The same shape
B. The same organs
C. The need to breathe
D. The same elements

Answers

Answer:

D.

Explanation:

Most living things need oxygen to survive. Oxygen helps organisms grow, reproduce, and turn food into energy

If you were working for a pharmaceutical company as part of a drug discovery team, which of these enzyme inhibitors would you suggest as a productive avenue for drug development? Group of answer choices a compound that inhibits enzymes by significantly changing the pH throughout the body a drug to treat diabetes that irreversibly inhibits an enzyme in the metabolic pathway to synthesize glucose a drug to treat high blood pressure that reversibly inhibits an enzyme catalyzing production of a chemical that causes blood vessels to contract a compound that acts as a competitive inhibitor for a digestive enzyme produced only in the presence of certain foods

Answers

Answer:

The correct answer is - a drug to treat high blood pressure that reversibly inhibits an enzyme catalyzing production of a chemical that causes blood vessels to contract.

Explanation:

In the given all the situation or conditions that is practical and possible it the drug that develop to treat high blood pressure by reversibly inhibiting an enzyme that catalyzes the chemical that leads to constirctions of the blood vessels.

These chemical cause blood vessel constrict and that leads to high blood pressure therefore inhibiting such enzyme that use to produce these chemical is a practicle solution for high blood pressure.

Part B: What is the name of the process that has occurred, and how would it likely occur in this population? (2 points)

Answers

Answer:

Explanation:

Please it seems your question is incomplete

What are practical applications of genetic engineering?

Answers

Answer:

Medicine, agriculture, animals, and even human mutations ;o

Explanation: Nothing much to explain.

where can we find most of the gases ? to the left or right section ? explain .​

Answers

Answer:
Nitrogen and oxygen account for 99 percent of the gases in dry air, with argon, carbon dioxide, helium, neon, and other gases making up minute portions.

Explanation:
:)

A species of fly has two alleles for the length of their legs.The allele for short legs is recessive, and is represented by q. If 21 of 100 organisms have short legs what is p

Answers

Answer:

0.49

Explanation:

just because

which type of gas or gasses are ressponsible for the start of life on earth

Answers

Answer:

Before life began on the planet, Earth's atmosphere was largely made up of nitrogen and carbon dioxide gases. After photosynthesizing organisms multiplied on Earth's surface and in the oceans, much of the carbon dioxide was replaced with oxygen.

Explanation:

please mark me as brinalist

In what order does blood flow through the body and heart? A. Right atrium, left atrium, lungs, right ventricle, left ventricle, body. B. Right atrium, left ventricle, lungs, left atrium, right ventricle, body. C. Right atrium, right ventricle, lungs, left ventricle, left atrium, body. D. Right atrium, right ventricle, lungs, left atrium, left ventricle, body.

Answers

Answer:

answer is D

l

Explanation:

Blood comes into the right atrium from the body, moves into the right ventricle and is pushed into the pulmonary arteries in the lungs. After picking up oxygen, the blood travels back to the heart through the pulmonary veins into the left atrium, to the left ventricle and out to the body's tissues through the aorta.

The statement that describes the order blood flows through the body and the heart is:

Right atrium, right ventricle, lungs, left atrium, left ventricle, body.

What is blood?

It is a red liquid with different shades that varies according to the amount of oxygen it has inside, that is, hemoglobin.

Characteristics of blood circulation

It is a necessary substance for oxygenation to occur between cells, as well as to regulate blood pressure.

Each side of the heart is divided into an upper chamber called the atrium and a larger, lower chamber called the ventricle.

The blood flows since it has left the right ventricle, has been oxygenated by the lungs and has returned to the left atrium through the pulmonary veins, it is carried to the left ventricle.

Therefore, we can conclude that the main function of the blood is to ensure that oxygen and nutrients are distributed between the cells of each organism.

Learn more about blood circulation here: https://brainly.com/question/3346248

Which is NOT involved at the beginning
of a nerve impulse?
A. reaching the threshold
B. a strong stimulus
C. sodium leaving the cells
D. negative charge inside the cell


Links and random responses will be reported

Answers

Answer:

Explanation:

it would be c////////////////////

Q10. Which of the following animal names should be present in the Red Data book?
Indian Monkey, Cow, Black bug, deer, Asiatic lion​

Answers

i think asiatic lion in my veiw

Red data book contains the list of endangered species. Asiatic lions are declared as endangered because of their small population size.

What is Red data book ?

A Red Data Book is a record of all the animal, plant, and fungal species that are in risk of extinction in a certain nation or state. The Red Data Book was created by the International Union for Conservation of Nature to protect endangered rare plant and animal species.

The Red Data Book aids in providing thorough information for studies and research on the animal species and subspecies that are in risk of extinction. The Red Data Book is one of the most significant concepts in the study of animal biodiversity.

Therefore, name of Asiatic lions, being endangered is in Red Data Book.

Learn more about endangered species , here:

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Mengapakah penggunaan mikroskop
elektron penting dalam mengkaji sel?​

Answers

Answer:

Mikroskop elektron mampu membesarkan saiz sel dengan kuasa gandaan yang tinggi

What would most likely occur over time if new technologies gave us information that challenged what scientists currently understand about natural selection

Answers

Question options:

A new scientific law would be established and proven by the findings. A new scientific theory would be established and proven by the findings. A current scientific law would be revised based on the new findings. A current scientific theory would be revised based on the new findings.

Answer:

A current scientific theory would be revised based on the new findings.

Explanation:

If new findings came about and challenged the current theory of natural selection so that Darwin's theory didn't look like it was true at all, the initial theory(darwin's theory of natural selection) would not be entirely discarded but revised according to these new findings and then form a sort of backbone to this new theory which would be based on findings of many independent researchers and not just one. Example: how some of Sigmund Freud's theories or Aristotle's may not be entirely valid today but still works as a fundamental for understanding other theories.

1. Complete the unfinished DNA strand from below.



2. What m-RNA strand would be formed from the DNA strand that you just made in #1 above?

3. Using the codon chart in the lesson, what amino acids would be aligned from the following m-RNA strand?

A U G G C G G A A

4. If the first base in the sequence above (#3) were mutated to a C, what would that do to the amino acid sequence?

5. If you were given a single tiny chunk of a nucleic acid strand and asked if it was DNA or RNA, what things would you look for to tell?

Answers

Explanation:

1. is T G C A T because it is a DNA as it contains thymine.

2. so mRNA strand would be U G A C G U A as it is in RNA so it would be uracil with adenine.

3. is Met- Ala- Glu

4. if is mutated to a C then it would be C U G G C G A A

so it would be Leu-Ala-Glu.

5. you can look for if it contains thymine or uracil. If thymine then DNA if Uracil then RNA. you can also see if it is double or single strand. if double than DNA if single than RNA.

hope this helps you :)

During the process of genetic recombination, crossing over occurs between two nonsister chromatids. DNA segments are exchanged between two nonsister chromatids during meiosis I. None of the above. maternal and paternal chromosomes pair and physically exchange DNA segments. All of the above.

Answers

Answer:

DNA segments are exchanged between two non-sister chromatids during meiosis I.

Explanation:

An exchange of chromosome segments or parts between non-sister homologous chromatids occurs which is also called crossing over. This crossing over occurs in the meiosis I that is responsible for the variation in the offspring produced. The formation of hybrid species occurs due to this exchanged of DNA segments between two non-sister chromatids.

How many taxa or levels exist in the phylogentic?
a)7
b)4
c)6
d) 8​

Answers

D would be the correct answer I think

in your own words, what is the definition for Double-helix?

Answers

A pair of parallel helices intertwined about a common axis, especially that in the structure of the DNA molecule.

A double helix is a structure. It is where two strands intertwine with chemical backbones to hold its shape. This structure can be seen in double stranded DNA.

Insects: Please choose the correct answer from the following choices, and then select the submit answer button. typically have a younger flying life stage and an older aquatic life stage after metamorphosis. generally give birth to live young. typically mate and produce young during their larval stage. have a respiratory system with spiracles connecting to tracheae.

Answers

Answer:

The correct option is ( have a respiratory system with spiracles connecting to tracheae).

Explanation:

The class INSECTA are under the phylum arthropoda which is the largest phylum in the animal kingdom. The insects are mainly land animals, they are widespread and adapted to all types of environment. They are also the only invertebrates that can fly. Examples of insects include: ants, butterflies, beetles, aphids and grasshoppers.

An insect has a well-defined head, thorax and an abdomen. The head had six segments and bears a pair of jointed antennae, compound eyes, simple eyes and mouthparts. The thorax had three segments, each bearing a pair of jointed walking legs. The abdomen has eleven segments and may have sensory and reproductive structures.

An insect carries out gaseous exchange by means of a network of open air tubes or TRACHEAE inside it's body. These tubes have openings called SPIRACLES to the exterior. Therefore the insects have an respiratory system with spiracles connecting to tracheae.


[tex]what \: is \: photosynthesis \: {?} [/tex]

Answers

Answer:

Photosynthesis is the process by which plants use sunlight, water, and carbon dioxide to create oxygen and energy in the form of sugar.

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[tex]\sf\purple{Photosynthesis}[/tex] is a process by which phototrophs convert [tex]\sf\pink{light\:energy}[/tex] into [tex]\sf\red{chemical\:energy}[/tex] .

The word “photosynthesis” is derived from the [tex]\sf\blue{Greek}[/tex] words "phos" (which means “light”) and "σύνθ-εóîς" (which means “combining together.”) And so it means “combining together with the help of light.”

The process of photosynthesis occurs in [tex]\sf\green{green\:plants}[/tex] (the primary producers in a food chain) and a few other autotrophic organisms such as cyanobacteria, purple bacteria and green sulfur bacteria.

Following is the photosynthesis [tex]\sf\purple{formula}[/tex] :

︎︎︎ 6 [tex]CO_{2}[/tex]+ 6 [tex] H_{2}O[/tex] —> [tex] C _{6} H_{12} O_{6}[/tex] ([tex]\sf\blue{glucose}[/tex]) + [tex] 6 O_{2}[/tex] ([tex]\sf\pink{oxygen}[/tex]).

[tex]\large\mathfrak{{\pmb{\underline{\red{Mystique35 }}{\red{❦}}}}}[/tex]

Which function is performed by both goblet cells and lacrimal glands?
digestion
stress regulation
protection
growth regulation

Answers

Answer:

protection

Explanation:

The correct answer would be protection.

Goblet cells are special cells found in the epithelial layers of small and large intestines and some other organs such as those associated with the respiratory tracts. They secrete mucin and create a protective mucous layer in the walls of the intestines.

Lacrimal glands on the other hand are exocrine glands found in the eyes. They secrete the watery component of the eyes which is made up of water, electrolytes, and protein. The fluid produced by the glands protects the eyes from drying out.

Hence, both goblet cells and lacrimal glands serve protective functions.

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answer this qustion plz 5. What are hyphae made of? plz do this all plz How did the camera obscura lead to the science of photography? What is the difference between squaring and cubing a value? All of the following statements are reasons why Buffalo hunting was important to Plains Indians except the answer is d just took it Select the restrictive clause in the sentence below.The boy who is in yellow is my brother.he boy who is in yellowwho is in yellow is myyellow is my brotherwho is in yellow 7. Write the new function, h(x), given the mapping statement: f(X)->-4f(X)f(X) =(x+3)^2+3 please answer the above question spam will be reported 10 times After a robbery, what is the purpose of conducting a neighborhood canvass?to look for hiding suspectsto identify and interview witnessesto check for footprints or tire tracksto find stolen items PLS HELP ME ON THIS QUESTION I WILL MARK YOU AS BRAINLIEST IF YOU KNOW THE ANSWER!!Which of the following statements is correct about the data set 7, 10, 9, 100, 5, 12?A. The data set has an outlierB. The mean is the best and most accurate measure to describe this data setC. The data set has two modesD. The data set has a median of 10 Select the correct answer from each drop-down menu.disease. Some carriers of the disease exhibit Sickle cell disease is passed on from parent to offspring. Sickle cell disease is an Increased resistance to malarial parasites. This resistance is a mutation.First drop down options are (inherited) & (acquired) Second drop down options are (Neutral)&(harmful)&(beneficial) what is the bench decorum short definition Which of the following represents a physical change? Is it ethical for a professor to deny a student an opportunity to write exam since he or she's late n didn't write his or her assignments then allowing other students to write an exam while they are also late , reasons plss 1. .............. can be considered as raw data. (a) Sithums G.C.E. (O/L) examination results(b) Z-Score of G.C.E. (O/L) examination results(c) The average marks of students of G.C.E. (O/L) examination(d) The top ten total marks of students of G.C.E. (O/L) examination What is the purpose of environmental legislation? I NEED HELP THANK YOU!! The Chiemsee Knee Replacement Clinic (CKRC) is a sports clinic located at the northern edge of the German Alps. It specializes in knee replacements for skiers who come to CKRC from Germany, Austria, Switzerland, and Italy. The clinic currently has one operating room (OR). However, since the clinic has dramatically more demand than capacity, the management team contemplates investing in a second OR. A lean consulting firm, however, suggests that before going ahead with installing new capacity, the clinic should first look at how it uses its existing capacity. The data collected by the consulting firm reveal that:The OR is available for 12 hours a day; the hospital has decided to not perform any procedures between 7pm and 7am. This time is equally divided across three surgeons.The standard procedure time for the knee surgery done at the clinic is 1h.The cleaning and housekeeping that needs to happen after each procedure takes 20 minutes. Almost all of this time could be saved if the cleaning crew were notified earlier on.10 minutes are spent on patient preparation / anesthesia work before each procedure. (Note: this is not part of the 60-minute procedure time). Proposals have been evaluated to move these 10 minutes to outside the OR, and there exists no medical reason that would prohibit doing this.)A surgeon only starts a case if all of the work associated with the case (preparation, procedure, and cleaning) can be completed in the 4h allotted to each surgeon. Surgeons never start BEFORE their allotted time.Though the clinic aims to operate 7 days a week, holidays, vacation, and construction time lead to an average of one day a week that the OR cannot be used at all.What is the OEE of the operating room? Assume a 12h window in which the OR could be used. Solve for $2\left(1-\frac{1}{2}\right)+3\left(1-\frac{1}{3}\right)+4\left(1-\frac{1}{4}\right)+\ldots+10\left(1-\frac{1}{10}\right)=?$Hall please