At fertilization, each biological parent contributes:
A) 23 chromosomes.
B) 23 pairs of chromosomes.
C) 23 genes.
D) 23 pairs of genes.

Question

Quizplus · Accepted Answer

At fertilization, each biological parent contributes 23 chromosomes, making the total number of chromosomes in the zygote 46. Option B, 23 pairs of chromosomes, would result in a total of 92 chromosomes in the zygote, which is not possible in humans. Option C, 23 genes, is incorrect as each chromosome contains numerous genes, not just one. Option D, 23 pairs of genes, is also incorrect as genes are located on chromosomes, not in pairs.

At Fertilization, Each Biological Parent Contributes