Scelta multipla
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
Scelta multipla
In humans, how many sex chromosomes are present in a typical gamete (sperm or egg) cell?
A
46
B
23
C
2
D
1
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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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