Question

Human egg has ________.

• A. One Y chromosome
• B. One X chromosome
• C. Two Y chromosome
• D. One X chromosome and one Y chromosome

Answer 1

The correct option is B One X chromosome

• Although a human body cell would have 46 chromosomes, since a human egg cell is a reproductive cell (sex cell), it would contain only half the number of chromosomes as a body cell.
• Thus, a human egg cell would have 23 chromosomes.
• Females having XX chromosomes in the 23rd pair, so human eggs would be having only one X-chromosome.
• Sperm produced by males are of two types, 22 chromosomes with one X chromosome and 22 chromosomes with a Y chromosome.

Hence, the correct answer is option B.