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Why are chromosomes pairs of DNA?

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Anonymous

12y ago
Updated: 8/20/2019

When chromosomes are visible, they exist as replicated DNA, so each chromosome consists of two identical sister chromatids, which will be separated during mitosis to form two new identical daughter nuclei.

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Wiki User

12y ago

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Is nucleus contains 23 pairs of DNA?

Yes in the cell of human the nucleus contains 23 pairs of chromosomes and each chromosome has one DNA molecule, hence there are 23 pairs of DNA.


Which nucleotides pair together?

Pyrimidines in DNA is about equal to the percentage of purines. This is established by Chargoff's rule and is confirmed by the fact that base pairing of anything but a pyrimidine with a purine would be too wide or too narrow to fit within the backbones of a DNA strand


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What DNA do elephants have?

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Human Mitochondrial DNA has a mere 16,569 base pairs or approximately 37 genes. It has a circular structure not a chromosome.


Is right that there are only two chromosomes in a human?

No, humans have 23 pairs of chromosomes - so 46 chromosomes. Every cell (with one exception) has DNA, and consequently the chromosomes. Only red blood cells have no nuclei, and no DNA.


Chromosomes are made of this material?

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The stringy structures in the cell nucleus that contain DNA are?

chromosomes


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The phase during mitosis in which DNA separates into pairs of chromosomes is called prophase. During prophase, the chromosomes condense and become visible as distinct structures before the actual separation occurs during later stages of mitosis.


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How many chromosomes would be in a zygote if the bird has 30 chromosomes?

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How many chromosomes are in a genome?

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