EMBRYOLOGY
CHROMOSOMES AND CELL DIVISIONS
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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How many pairs of chromosomes are in a human being?
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23
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44
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89
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72
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Explanation:
Detailed explanation-1: -In humans, each cell normally contains 23 pairs of chromosomes, for a total of 46. Twenty-two of these pairs, called autosomes, look the same in both males and females. The 23rd pair, the sex chromosomes, differ between males and females.
Detailed explanation-2: -Humans are not the only animal with 23 pairs, either–the Chinese subspecies of Muntiacusmuntjac, a small kind of deer, also has 23 pairs of chromosomes.
Detailed explanation-3: -A genetic condition where someone has either too many or two few chromosomes is called aneuploidy (AN-yoo-ploy-dee). A complete set of genetic information includes 23 pairs of chromosomes, which adds up to 46 chromosomes total.
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