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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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The foam will be formed only in glass B and D.

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4 years ago
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4 years ago
What is true about the ocean life zones?
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3 0
3 years ago
Read 2 more answers
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jarptica [38.1K]

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7 0
3 years ago
If flies that are heterozygous for all three traits are crossed, what proportion of the offspring would you expect to be heteroz
Archy [21]

Answer:

\frac{1}{8}

Explanation:

If flies that are heterozygous for all three traits are crossed; e.g HtHtHt crosses with HtHtHt. The proportion of the offspring that would be expected to be heterozygous for all three traits will be: 1/8 because 50% (0.5) of their offspring will be heterozygous for just one trait. Therefore for three traits; we have (0.5)³= 0.125

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From the table, the area of the asterisk region illustrate the traits that are heterozygous in the offspring.

= \frac{8}{64}

= \frac{1}{8}

6 0
4 years ago
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