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meriva
3 years ago
5

Define a chromosome and give more details about it​

Biology
2 answers:
solmaris [256]3 years ago
7 0
In the nucleus of each cell, the DNA molecule is packaged into thread-like structures called chromosomes. Each chromosome is made up of DNA tightly coiled many times around proteins called histones that support its structure.

Chromosomes are not visible in the cell’s nucleus—not even under a microscope—when the cell is not dividing. However, the DNA that makes up chromosomes becomes more tightly packed during cell division and is then visible under a microscope. Most of what researchers know about chromosomes was learned by observing chromosomes during cell division.


SCORPION-xisa [38]3 years ago
6 0

Answer:

a chromosome is an organelle located in the nucleus of both animal and plant cells. it's main purpose is to carry DNA.

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-Dominant- [34]

A claim is an unverified statement or theory which is made about something which may or may not be true.

<h3>Verification of a claim</h3>

For a claim to be validated, i.e, proven to be true (in science), then there needs to be tests and experiments which needs to be carried out to show that the claim is valid.

With this in mind, if for example if there's a claim that jewelweed helps to treat symptoms caused by poison ivy, then there needs to be a controlled experiment to see if this is true or not.

If after a series of experiments and it can be established without any iota of doubt, then the claim is valid and the scientific process will move to the next stage.

Please note that your question is incomplete so I gave you a general overview to give you a better understanding of the concept.

Read more about claim and evidence here:

brainly.com/question/10877313

8 0
2 years ago
Answer please im doing a map exam i need an answer asap
erastovalidia [21]

I would go with B & D because they change over time and they can go extinct like those big octopus in the oceans, they are rare to see in my opinion because they can blend in with other things that keeps them away from danger.

5 0
3 years ago
These genes are 30 units apart on chromosome III. In this problem, you will calculate what crossing over in the female contribut
Damm [24]

Answer:

This exercise is incomplete. The response options are as follows:

a) e+ ca+

b) e ca

c) e ca+

d) e+ ca

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Explanation:

The Punnett square is a diagram used by biologists to calculate the probability that an individual has a particular genotype. In the Punnett square, each of the possible combinations for the expression of the dominant and recessive alleles can be observed. In the case of exercise, since a crossing is not possible in men, these will only help later during the combination of the alleles.

7 0
3 years ago
Which of the choices below is the parent cell for all formed elements of blood?
Ostrovityanka [42]

Answer:

The hemocytoblast  (option B) are the parent cell for all formed elements of blood

Explanation:

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7 0
4 years ago
When chemical communication at a synapse is terminated by the recapture of neurotransmitter molecules by the presynaptic neuron,
velikii [3]
<h2>ANSWER</h2>

When chemical communication at a synapse is terminated by the recapture of neurotransmitter molecules by the presynaptic neuron, we refer to the process as <u>Reuptake.</u>

<h3>#CarryOnLearning</h3>
7 0
2 years ago
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