Biology
In a human female, ovum consists of:
- 23 pairs of autosomes
- 22 pairs of autosomes and 1 pair of sex chromosomes
- 22 autosomes and 1 Y-chromosome
- 22 autosomes and 1 X-chromosome
Chromosomes
ICSE 2020
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Answer
22 autosomes and 1 X-chromosome
Reason — A somatic cell in human has 23 pairs of chromosomes out of which 22 pairs are autosomes and 1 pair is sex chromosome (XX in females and XY in males). The ovum is formed as a result of meiosis that leads to halving of chromosome numbers. Therefore, In a human female, ovum consists of 22 autosomes and 1 X-chromosome.
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