객관식
Which of the following is true of a species that has a chromosome number of 2n=16?
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3. Extensions to Mendelian Inheritance
Sex Chromosome
객관식
In humans, how many sex chromosomes are present in a typical gamete (sperm or egg) cell?
A
46
B
23
C
2
D
1
검증된 단계별 안내1
Recall that humans have 46 chromosomes in total, arranged in 23 pairs, including one pair of sex chromosomes.
Understand that gametes (sperm and egg cells) are produced through meiosis, a process that reduces the chromosome number by half.
Since meiosis halves the chromosome number, each gamete contains 23 chromosomes instead of 46.
Among these 23 chromosomes, one is a sex chromosome (either X or Y in sperm, and X in eggs).
Therefore, a typical human gamete contains exactly 1 sex chromosome.
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