Crime-scene work often involves obtaining a DNA sample from a drop of blood to help identify persons who may have been involved. Frequently, the size of the DNA sample is extremely small, too small for easy analysis. Which of the following laboratory procedures could criminologists use to amplify the amount of DNA present?

A: Cloning and gel electrophoresis
B: Cloning and polymerase chain reaction (PCR)
C: DNA splicing and polymerase chain reaction (PCR)
D: Vector amplification and DNA splicing

Answers

Answer 1

Amplification of DNA is a very useful tool in the study of the human genome. DNA amplification ensures the production of multiple copies of the needed segment.

Criminologists can use Cloning and PCR to amplify the amount of DNA present...

Cloning involves creating identical copies of a particular DNA segment in study. Then amplification of the DNA using polymerase chain reaction will aid in amplifying and producing thousands of these copies of short targeted segments in minutes. This tool is very useful in ensuring the multiplication of that particular targeted sequence for analysis.

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Related Questions

the hair cells that detect sound vibrations lie on the ________ membrane.

Answers

Answer:

Basilar

Explanation:

what are two terms used to describe organisms such as humans

(ecology)

Answers

Answer:

Carnivores omnivores reproducers maybe..lol

Chlorophyll a
a. absorbs mostly orange-red and
blue-violet light.
b. absorbs mostly green light.
c. is an accessory pigment.
d. is responsible for the red color of many
autumn leaves.

Answers

a. absorbs mostly orange red and blue violet light

C. is an accessory pigment

Organisms require a variety of chemical nutrients, such as ______, which are components of proteins, nucleic acids, and ATP.

Answers

Organisms require a variety of chemical nutrients, such as NITROGENOUS, which are components of proteins, nucleic acids, and ATP. It is an essential element for life.

Nucleic acids, either DNA or RNA, contain nitrogen in the nitrogen bases of their nucleotides (i.e., Adenine, Guanine, Cytosine and Thymine, Uracil).

Adenosine triphosphate (ATP), the energy coin of the cell, contains nitrogen in its Thymine nitrogen base.

Finally, proteins are made of amino acids, whose building blocks are carbon, hydrogen, oxygen and nitrogen atoms.

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The type of fibers specialized to continue contracting for extended periods of time, as would be required in running a marathon, for example, are _____ fibers.

Answers

The type of fibers specialized to continue contracting for extended periods of time, as would be required in running a marathon, for example, are slow fibers.

Slow fibers have numerous mitochondria that allow you to obtain large amounts of energy aerobically.

Its contraction speed is slow, providing it with high resistance to fatigue, thus maintaining exercise for hours, typical of endurance sports (marathon).

They are able to retain a longer duration of exercise at a more constant pace.

These fibers are important for endurance triathletes, those who compete in medium and long distance.

Therefore, we can conclude that the type of fibers specialized to continue contracting for extended periods of time, as would be required in running a marathon, for example, are slow fibers.

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A bacterium is inoculated into a tube of nutrient broth and incubated. After incubation, it appears turbid throughout, top to bottom, with the most amount of turbidty at the very top. This bacterium would be called a:

Answers

Answer:

facultative anaerobe

Explanation:

Answer:

Can I guess the answer just give me a sec

dna is a double-stranded molecule made up of complementary, antiparallel strands. based on what you know about complementary base pairing, fill in the rest of the details in the figure.

Answers

The details in the figure correspond to the elements that the DNA strands have in their ends. Also, they correspond to the antiparallel strand with the complementary bases.

The DNA has two antiparallel strands with complementary bases (thymine, adenine, guanine, and cytosine). That is to say, that T pairs with A and G with C. Also, they have specific elements in their ends.

The 3' strand in its end has a hydroxyl (OH) group.The 5' strand in its end has a phosphate group.There is a complementary strand with its respective nucleotides that will pair with the other strand according to their specific bases (A-T; C-G)

In conclusion, the top left end of the 3' strand has a hydroxyl group, while the top right, the 5', has a phosphate group. The complementary strand will go the other way round, from 5' to 3', so the hydroxyl and phosphate groups would be on the right and the left, respectively. The bottom strand is the complementary one, and it runs from 3' to 5'.

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when fatty acid metabolism creates more acetyl-coa than can be handled in the citric acid cycle, the excess acetyl-coa is converted into ________.

Answers

Answer:

Ketone Bodies

Explanation:

If excess acetyl CoA is created and overloads the capacity of the Krebs cycle, the acetyl CoA can be used to synthesize ketone bodies.

What is ONE way in which geologists may utilize GPS and satellite mapping?

Answers

gps national geography

If enzyme 2 is denatured (destroyed) the levels of which substance will increase.

Answers

Answer:

Higher temperatures disrupt the shape of the active site, which will reduce its activity, or prevent it from working. The enzyme will have been denatured .

hope it helps :D

How is real life fingerprinting different from the techniques used on CSI?

Answers

CSI used various techniques for fingerprinting like powder dusting, iodine fuming, silver nitrate soaking, etc to determine the fingerprint of criminals.

What do you mean by CSI?

CSI stands for Crime Scene Investigation. It is a brach that investigates crime scene evidence.

Real-life fingerprinting does not involve critical techniques for identification. While CSI performs various techniques and is able to find the most similarity between the real criminal involves in any violent activity.

Therefore, CSI used various techniques for fingerprinting like powder dusting, iodine fuming, silver nitrate soaking, etc to determine the fingerprint of criminals.

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Real-life fingerprinting differs from CSI techniques. While CSI portrays fingerprint analysis as rapid and foolproof, reality involves a slower and more nuanced process.

Real-life fingerprinting is a more involved process than the quick and ostensibly error-proof fingerprint analysis seen on CSI. CSI frequently depicts fingerprint matching as a straightforward database search that produces instant identification. However, in the actual world, fingerprint analysis is carried out by skilled experts who painstakingly check ridge patterns, minute spots, and other traits to assure precise matches. To avoid mistakes, this procedure can be time-consuming and requires knowledge.

In addition, the way that huge, networked databases are shown in CSI oversimplifies reality. Although modern technology makes fingerprint comparison easier, the vast network of records that are easily available is more fantasy than reality. Real-world law enforcement databases are subject to stringent guidelines and restrictions.

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What controls circadian rhythms in humans? Explain how this process works.

Answers

Circadian rhythms are regulated by small nuclei in the middle of the brain. They are called the suprachiasmatic nuclei (SCN). Nuclei act as control centers. The SCN are connected to other parts of the brain.

When electrons flow along the electron transport chains of mitochondria, which of the following changes occurs?.

Answers

i dont know why wont you ask your dad

what is the process which increases carbon dioxide levels in the air

Answers

Answer:

organisms respire or decompose (decay)

as a microbiologist you have been asked to investigate the regulation of a novel gene in a bacterial species. given what is known about bacteria, the logical place to begin your investigation is

Answers

The logical place to begin your investigation is TRANSCRIPTIONAL CONTROL. This field investigates the differential expression of genes.

Transcriptional control refers to the study of how genes are differentially expressed in the genome of cells.

In prokaryotic organisms (e.g., bacteria), genes are expressed in clusters known as operons.

An operon is a group of genes under the control of a single promoter sequence.

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What are the three types of posttranscriptional processing?.

Answers

Answer:

5' capping, addition of the poly A tail, and splicing.

Explanation:

I got it right on the test!!!! I hope this helps.

I need help for Monday pls

Answers

Answer:

Explanation:

1.foods

2. lemons or any of acidic fruit

3.washing powder

4. arrhenius Acid

5. hydrogen

6. alkali/ base

7. water?

8. alkali

9. hydroxide

unsure about the rest sorry

Answer:

((1))●many __foods__

●__vegetables__

●such as __detergents__

((2))

acids

a) H

H2O

b) hydronium

((3))

bases

a)Hydroxide

Water

separate

b)water

hydrogen

hydroxide

B

1) pH

inverse

a) acidic

b) basic

........ BRAINLIST.....:)

What phase of mitosis is pictured below?

Answers

Answer:

Its a Anaphase

because the chromatids of each chromosomes have separated and are moving towards the poles

What neutron type carries impulses WITHIN the central nervous system?

Answers

Answer:

NEURONS

Explanation:

It can be sensory or motor neurons

fish is high in omega-3 fatty acids, which are most beneficial for the __________ as mentioned in the video.

Answers

Based on the information given, it should be noted that omega-3 fatty acids is found in fishes and this is essential for the heart.

Omega-3 fatty acids are typically found in seafoods such as fatty fish, she'll fish, crabs, oysters, etc. They are vital on maintaining a healthy body.

It should be noted that omega-3 fatty acids are key to the structure of the cells that we have in our bodies. They're also a source of energy and vital for the heart and lungs.

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the mycelium is a mesh of filaments, each of which is called

Answers

The mycelium is a mesh of filaments, each of which is called a hypha

1. What charts, tables, or drawings would clearly show what you have learned in this lab?
Each chart, table, or drawing should have the following items:
a. An appropriate title
b. Appropriate labels

Answers

The answer is

B. Appropriate labels

Scientists can study the human genome using DNA fingerprinting.
DNA fingerprinting allows scientists to

B. break the hydrogen bonds in a gene to allow DNA to replicate itself.

c. determine the location of an abnormal gene on an individual's
chromosome.

A. prevent a gene from matching complementary bases onto a strand of
RNA.

Answers

Answer:

your answer is C.

Explanation:

DNA fingerprinting allows researchers to determine the location of an abnormal gene in a person's chromosomes.

What are the steps in DNA fingerprinting?

DNA fingerprinting is a laboratory technique used to determine the likely identity of a person based on the nucleotide sequences of certain regions of a person's DNA that are unique to individuals.

DNA fingerprinting was used early in legal disputes, particularly in solving crimes and establishing paternity. It is also used to detect inherited genetic diseases and can be used to identify genetic matches between tissue donors and recipients.

In DNA fingerprinting, researchers collect DNA samples  from various sources, such as hair from  crime scenes and blood from  victims and suspects. They then narrow down scattered sections of repetitive DNA in these samples.

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HELP ASAPPP


Describe any other local examples of relationships between organisms that may influence population numbers?

Answers

Answer: trees, flowers, bees

Explanation:

ILL GIVE U BRAINLIEST
What health-related careers would be of most interest to you? How would learning more about anatomy be helpful for that career?

Answers

A Psychiatrist. A psychiatrist needs to know the human anatomy because they need to be able to prescribe medicine while also knowing the consequences of the patients body. If a psychiatrist was to prescribe a medicine without knowing the human anatomy the psychiatrist would be at risk of injuring the patient. In conclusion learning the human anatomy and mastering it would be helpful for a psychiatrist because it prevents less risk of harming a patient while prescribing a medication.

Which muscle extends the knee, laterally rotates the tibia, aids in abduction and medial rotation of the femur, and tautens the iliotibial tract to brace the knee when the opposite foot is lifted

Answers

The popiletus muscle is the muscle that extends the knee , laterally rotates the tibia.

The popliteus muscle is a little muscle that extends the knee and form muscle the floor of the popliteal fossa. It is part of deep posterior leg muscles, that rotate laterally tibialis posterior, flexor digitorum longus and flexor hallucis longus.

The popliteus muscle extends to the knee joint. It is formed from the femur and the posterior horn of the lateral meniscus, and also extend to the proximal tibia.

The popliteus muscle help to function in an gait cycle by causing the flexion of the extended (“locked”) knee.

Therefore, The popiletus muscle is the muscle that extends the knee , laterally rotates the tibia.

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Where does anaerobic respiration occur.

Answers

While most aerobic respiration (with oxygen) takes place in the cell's mitochondria, and anaerobic respiration (without oxygen) takes place within the cell's cytoplasm.

1. Which of the following can cause a short circuit? A.When a wire breaks B.When theh insulation around a wire is frayed C.When the battery runs out of electricity D.When there is no resistor in the circuit.​

Answers

Answer:

When the insulation around a wire is worn or frayed.

Explanation:

Im on the quiz!

Answer:

When the insulation around a wire is worn or frayed.

What condition occurs when epidermal cells are created too quickly? a. Acne c. Psoriasis b. Skin cancer d. Chicken pox.

Answers

The condition that occurs when epidermal cells are created too quickly is known as psoriasis. In this disease, the cell cycle of skin cells is abnormally accelerated.

Psoriasis is a skin disease associated with itchy patches of thick, red skin, especially in the knees, trunk, and scalp.

Psoriasis is an autoimmune disease caused when the immune system attacks healthy skin cells.

Psoriasis is well characterized by hyperproliferative keratinocytes, which are the most prominent type of cell within the epidermis.

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HELP WILL GIVE BRAINLIEST
How does the temperature change as you move from the top to the bottom of
the thermosphere?
A. It stays the same.
B. It changes randomly.
C. It increases
D. It decreases

Answers

the answer is c that’s what I put
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