객관식
In humans, how many chromosomes are present in a mature sex cell (gamete) after meiosis is complete?
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17. Meiosis and Sexual Reproduction
Meiosis
객관식
In humans, how many chromosomes are typically found in a sex cell (gamete) after meiosis is complete?
A
23
B
46
C
92
D
16
검증된 단계별 안내1
Understand that human somatic (body) cells are diploid, meaning they contain two sets of chromosomes, one from each parent, totaling 46 chromosomes.
Recognize that sex cells, or gametes (sperm and egg), are produced through meiosis, a special type of cell division that reduces the chromosome number by half.
Recall that meiosis results in haploid cells, which contain only one set of chromosomes, to ensure that when fertilization occurs, the resulting zygote has the correct diploid number.
Since the diploid number in humans is 46, calculate the haploid number by dividing 46 by 2, which gives the number of chromosomes in a gamete.
Conclude that each human gamete contains 23 chromosomes after meiosis is complete.
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