"I don't get it. Why do I need to learn about meiosis to understand about variation in a species?" moaned Trina. How would you explain to her what the relationship is between the two?

Answers

Answer 1

Answer:

The cell division that halved the no. of chromosomes is the meiosis. The meiosis takes place during formation of gametes (eggs & sperms) in higher organisms. eggs & sperms posses only one chromosomes of each pair of chromosomal set. (2n➡️n).

When these gametes fuse to form the zygite, the chromosomes become n+n➡️2n again.

"I Don't Get It. Why Do I Need To Learn About Meiosis To Understand About Variation In A Species?" Moaned

Related Questions

Droughts occur due to climate change and elevated temperatures, which in turn may lead to other consequences as well. Imagine that a wildfire happened in the nature reserve. Predict what would happen if such an environmental shift that is so extreme and rapid
Hits the nature reserve and the population of deer mice does not have time to adapt. Propose a possible solution for this problem.

Answers

Answer:

this is not a correct Q

this is wrong

Identifying an individual's genetically influenced health risks could increase their potential to achieve optimal health.

Answers

Answer:

Yes.

Explanation:

Yes, Identifying an individual's genetically influenced health risks could increase their potential to achieve optimal health because necessary steps can be taken in order to prevent the disease from more spreading and cause damaged to the body. Identification of genetical disease can be prevented to cause damage if the factors that triggers the disease can be avoided so we can conclude that identification of genetically influenced health risks can increase the chances of getting good health.

Answer:

true

Explanation:

For this lesson, my challenge for you is to solve the mystery and find out what is the reason why we have different weather
disturbances in our country. Are you ready? Good luck on another journey, our brave, young scientist! Solve the mystery word
by guessing the hidden words of the number codes. (Coding example 1=A, B=2…)
2-18-5-5-26-5-19 9-20-3-6
13-15-14-19-15-15-14-19
Why do weather patterns in our country vary from time to time?

Answers

Answer: Breeze sitc monsoon

Explanation:

What are chromosomes ? explain​

Answers

Explanation:

sana po makatulong sainyo

Question

What are chromosomes?

Answer:

Chromosomes are thread-like structures found within the nucleus of both animal and plant cells. Protein and a single molecule of deoxyribonucleic acid make up each chromosome (DNA). DNA is passed along from parents to children and carries the precise instructions that distinguish each living thing.

The word "chromosome" is derived from the Greek terms "chroma" and "body" (soma).

--------------------------hope it helps...have a great day!!

Quade is studying for an exam, which will cover neurons and action potentials. He has drawn a diagram that shows the segments of an axon, and he has noted that every time a segment fires, the _____ flood in from the outside of the cell, while the prior segment returns to its resting potential. Please choose the correct answer from the following choices, and then select the submit answer button.

Answers

Answer: positive sodium ions

Explanation:

This relates to the Action Potential which is what a nerve cell goes through when it needs to send information down the nerve cell to another cell and so on till it gets to the destination of the message.

The information is transmitted when the segments of the axon fire and when they do, positive sodium ions come in from outside the cell to the inside thereby making the inside positive. The previous segment would return to a resting potential when potassium ions which are negative, rush into the cell.

SO you hopefully selected that an Allele is a form of a gene. BUT what is this really...

A. an allele is a protein that causes hair no hair in the guinea pig

B. an allele is a length of DNA with a specific sequence of nitrogen bases that make a protein that results in Hair or No Hair on the guinea pig

Answers

Answer:

B. an allele is a length of DNA with a specific sequence of nitrogen bases that make a protein that results in Hair or No Hair on the guinea pig

Explanation:

An organism that has two different alleles of the gene is called heterozygous. Phenotypes (the expressed characteristics) associated with a certain allele can sometimes be dominant or recessive, but often they are neither.

B. an allele is a length of DNA with a specific sequence of nitrogen bases that make a protein that results in Hair or No Hair on the guinea pig

PLEASE HELP! WILL MARK BRANLIEST!

Carbon Dioxide trapped in the atmosphere causing the Earth to become is called the ___:

A. global warming, B. greenhouse effect, C. botanical gardens effect

Explain why.

Answers

Answer:

Greenhouse effect

Which population of organisms would be in greatest danger of becoming extinct? *
A. A population of organisms having few variations living in a stable environment.

B. A population of organisms having many variations living in a stable environment.

C. A population of organisms having few variations living in an unstable environment.

D. A population of organisms having many variations living in an unstable environment.

Answers

B is the correct answer

Question 3 of 10
What is altitude?
A. A certain distance north or south of the equator
B. The movement of a large mass of air
C. A mass of flowing ocean water
D. The measure of height above sea level
SUBMIT
Need ASAP pleaseeeee

Answers

I think it’s D not entirely sure tho

Answer:

D.

Explanation:

base on my research..the correct answers is letter D

Nutrients in excessive amounts enter water systems, causing algal bloom.

Answers

Answer: Nutrient pollution is caused when too many nutrients, primarily nitrogen and phosphorus, are added to water bodies. The excess nutrients act as fertilizers, causing excessive algae  growth. It is common for nutrients to run off the land in urban areas, where lawn and garden fertilizers are used.

Explanation:

I explained in the top-

Hope it helps if it doesn't then whooops

Answer:

good question very good

The dichotomous key below provides a way to classify some animals into groups according to their physical characteristics. The key can be used to classify each of the four animals represented below. Which answer choice shows the correct classification group for each animal? 1. Wasp = group D; Ant = group D; Tiger = group A; Bird = group B 2. Wasp = group B; Ant = group A; Tiger = group D; Bird = group C 3. Wasp = group B; Ant = group D; Tiger = group A; Bird = group C 4. Wasp = group D; Ant = group A; Tiger = group A; Bird = group B

Answers

Complete question:

The dichotomous key below provides a way to  classify some animals into groups according to their physical characteristics.

Dichotomous Key

        I wings------------------go to II

          no wings------------- group A

       II feathers---------------group B

          no feathers----------go to III

      III two legs------------- group C

          six legs---------------group D

The key can be used to classify each of the four  animals represented below ⇒ wasp, ant, tiger, bird

Which row in the chart shows the correct  classification group for each animal?

Row    Wasp           Ant           Tiger          Bird

 (1)      group D    group D    group A     group B

 (2)     group B    group A     group D     group C

 (3)     group B     group D     group A    group C

 (4)     group D     group A     group A     group B

Answer:

Row    Wasp           Ant           Tiger          Bird

(4)     group D     group A     group A     group B

Group A: Tiger and Ant → They do not have wingsGroup B: Bird → It has wings and feathersGroup D: Wasp → It has wings, does not have feathers, and has six legs

Explanation:

When analyzing a dichotomous key, you just need to pay attention to the given descriptions and carefully observe the organisms you have.

The key describes specific morphological traits of each organism that are useful to differentiate it from other organisms. So all you need to do is to follow the instructions given in each step, and the key will guide you directly to the answer.  

In the exposed example you have four organisms: wasp, ant, tiger, bird

The provided key gives you three steps: I, II, III.

Step I:

wings------------------go to II

no wings------------- group A

Here the key tells you to separate, from your group of organisms, the ones that have wings from the ones that do not have wings.

wasp and bird have wings → So you need to go to step IItiger and ant do not have wings → So they belong to Group A

Step II:

feathers---------------group B

no feathers----------go to III

Now you only need to consider the bird and the wasp, which are the two organisms that have wings.

Here the key tells you to separate the one that has feathers from the one that does not have feathers.

Bird has feathers → So it belongs to the group BThe Wasp does not have feathers → So you need to go to step III

Step III:

two legs------------- group C

six legs---------------group D

In this last step, the key takes you to two possible groups. But you only have one left organisms, which is the wasp. So what you need to do is to observe how many legs your wasp has. It is an insect, so it has six legs. The wasp belongs to Group D.

You do not have any organism that belongs to group C.

To sum up, according to the given information you could group the group of organisms as follows:

Group A: Tiger and Ant → They do not have wingsGroup B: Bird → It has wings and feathersGroup D: Wasp → It has wings, does not have feathers, and has six legs

Which is a positive effect of the technological advance of going from a
compass to a GPS?

Answers

Answer:

The positive effect of the application of a GPS over a compass is that one can get success in getting to his or her desired location. A GPS can inform about the exact location, and when it is combined with a map, it makes the person reach straight to where he or she desires to go

Describe the role of gravity in maintaining the atmospheric layer around Earth. I will mark as brainliest

Answers

Answer:

Hi so the answer is that Gravity pulls the gas molecules towards Earth's center. The pull of gravity is stronger closer to the center at sea level. Air is denser at sea level where the gravitational pull is greater. Gases at sea level are also compressed by the weight of the atmosphere above them.

Explanation:

I really hope i helped , pleaseeee give me brainliest , have a nice day and thank you in advance :))) .

Why is carbon so important for living things

Answers

Answer:

Organic compounds make up the cells and other structures of organisms and carry out life processes. Carbon is the main element in organic compounds, so carbon is essential to life on Earth. Without carbon, life as we know it could not exist.

Explanation:

Answer:

Carbon is the most important element to living things because it can form many different kinds of bonds and form essential compounds.

Why do plants need water, light, and carbon dioxide?

Answers

Answer;

these are used in photosynthesis altogether. light splits the water into hydrogen and oxygen. water is used to manufacture starch, soften the testa during germination, dissolve food as well. carbon dioxide is also used during photosynthesis.

What happens to a spermatid to change it into a sperm cell?
O Meiosis occurs, making a cell with n chromosomes.
The nuclei of two polar bodies fuse, making a cell with 2n chromosomes.
O A tail is added, making the sperm a motile cell.
O Amembrane hardens, making the sperm a nonmotile cell.

Answers

A tail is added, making the sperm a motile cell.

Sperm does not become spermatozoa (what we think of when we think of sperm) until the formation of the tail.

A scientist is comparing the sequences of related genes among three species. Two of the species have very similar sequences, while the sequence of the third species differs greatly from the others. T

Answers

Hi. The question you presented above is incomplete. This makes it impossible for this question to be answered. However, when searching for your question on the internet, I was able to find another question exactly like yours, which asked you to explain the evolutionary relationship between these three species. If that's the case for you, I hope the answer below will help you.

In a simplified way, we can infer that among the three species presented above, the third presented a faster evolution than the first two and this is what explains the difference between the gene sequences between the species. As the question presents, the three species have related genes, which indicates that they had a common ancestor, however the difference in the gene sequence of the third species shows that it evolved first, showing changes that cannot be noticed in the first two species that are evolving more slowly.

what is the device used to observe cells ?

Answers

Answer:

Microscope

Explanation:

A microscope is an instrument that can be used to observe small objects, such as cells. The image of an object is magnified through at least one lens in the microscope.

Question

What is the device used to observe cells?

Answer

Microscopes

What is Microscopes?

Microscope is an instrumet or device that can be used to observe small object , even cells or smal organisms.

#LearnwithBrainly

Gene expression establishes that genes will be turned on to build a protein.

A. TRUE

B. FALSE

Answers

The answer for this question is gonna be true

Answer:

A. TRUE

Explanation:

Gene expression establishes that genes will be turned on to build a protein.

During which phase of the cell cycle are chromo-
somes copied?

Answers

Answer:

S phase

Explanation:

S phase is the second phase of interphase (longest phase where cell grows and replicates it's DNA and does it function. It is broken up into smaller sub phases). S phase is the synthesis phase. During this phase chromosomes are replicated ( The DNA is copied).

What is a pioneer species? (Will give brainiest)

Answers

Answer:

The first species to colonize an ecosystem that is previously damaged or disrupted. Supplement. Pioneer species is the first to colonize an ecosystem previously disturbed or damaged. For example, sand that has become barren is colonized by a pioneer species of lyme grass (Leymus arenarius)

Explanation:

Charles Darwin and Alfred Russel Wallace figured out that ____ influences the course of random evolution?
A. Dog breeders

B. Natural selection

Answers

Answer:

B. Natural selection

Explanation:

Explaination:

Answer:

B. natural selection

Explanation:

Natural Selection: Charles Darwin & Alfred Russel Wallace. A visit to the Galapagos Islands in 1835 helped Darwin formulate his ideas on natural selection. He found several species of finch adapted to different environmental niches. The finches also differed in beak shape, food source, and how food was captured.

What stage of photosynthesis uses
carbon dioxide to make glucose?
A. Light reactions
B. Calvin Cycle
C. ATP synthesis
D Cellular respiration

Answers

Answer:

light reaction because glucose is a factor of sugar.

help plsssssss will give brainliest

Answers

Answer:

C

Explanation:

Common sense

The answer is C Revolution of Earth around the Sun.

39 In a DNA molecule, if 38% of the molecular bases are C(cytosine), what percent of the bases are T (thymine)?
(1) 12
(3) 38
(2) 24
(4) 62

Answers

12
Explanation:
cause double of 38 is 62 and subtract that from 100 is 24 and divided that by 2 is 12

PLZZZZZZZZ HELPPPP!
What is an example of an event that can compromise an ecosystem?
1.seasonal climate change
2.seasonal dry period
3.d eveloping land around cities
4.high temperatures

Answers

Answer: Seasonal climate change

Explanation:

Answer:

1. Seasonal climate change

Explanation:

oh, and can you please talk to Miracle, she needs a lot of help right now since her grandma passed away

What is the evidence of variation when individuals in a population or group differ in some trait of interest

Answers

Answer:

When the more dominat trait starts to show up in most of the population while keeping the specis the same. This can be very benifitial to the population or harmful depending on the trait that is getting passed down.

Explanation:

Deforestation occurs when large Amounts of trees are cut down and not replaced which of the following would result from deforestation


A. Decrease carbon in the atmosphere
B. Increased carbon in the atmosphere

Answers

Answer:

The correct answer is (B).

Explanation:

Deforestation occurs when large Amounts of trees are cut down and not replaced, which of the following would result from deforestation...

Increased carbon in the atmosphere

This statement is true because when trees become less abundant, the amount of oxygen being released into the atmosphere by trees via photosynthesis.

The circumstance that would result from deforestation is the increased carbon in the atmosphere. Thus, the correct option is B.

What is Deforestation?

Deforestation may be defined as the process of cutting down or eliminating trees in large numbers from our surroundings. This activity generally happens due to industrialization, wood extraction, urbanization, etc.

When the number of trees remains less in the environment due to deforestation or any other activity, the level of carbon dioxide in the atmosphere typically rises.

This is because carbon dioxide is considered the reactant of photosynthesis that is utilized by the plants along with water in the presence of sunlight and converted into oxygen.

But when the number of plants decreases, the level of carbon in the atmosphere increases, and the level of oxygen in the atmosphere decreases.

Therefore, the circumstance that would result from deforestation is the increased carbon in the atmosphere. Thus, the correct option is B.

To learn more about Deforestation, refer to the link:

https://brainly.com/question/76446

#SPJ2

There are 20 different types of amino acids, which can result in a wide variety of protein shapes. Which of the following is not a function associated with proteins?
A. providing structure
B. speeding up chemical reactions as enzymes
C. information storage
D. all of these are functions of proteins​

Answers

Answer:

c information storage

Explanation:

information is stored in dna which provides the instructions required to make proteins . proteins do not store information

Which structure(s) are connected to the peripheral nervous system? Select all that apply.

Answers

Answer: Here you go

Explanation: nerves (cranial, spinal, and peripheral) and neurons (sensory, motor)

Answer:

A Sense organ, A muscle, And A gland

Explanation:

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