Question

13. How do babies get their homologous pairs of chromosomes, if an egg and sperm are only haploid (23

chromosomes)?

Answer 1

When a sperm and egg join during fertilization, the egg and sperm contribute their haploid set of chromosomes to form a diploid zygote. The haploid sets of chromosomes pair to form homologous pairs, with one chromosome in the team coming from the mother and the other from the father.

Step-by-step explanation:

Answer 2

When a sperm fertilizes an egg, the resulting fertilized egg, or zygote, has a complete set of homologous pairs of chromosomes, with one set inherited from the mother's egg and one set inherited from the father's sperm. This happens because the egg and sperm each contain only one copy of each chromosome, rather than the full set of two copies that are found in the cells of the body. When the egg and sperm fuse, the resulting zygote has a full complement of chromosomes, with one copy of each chromosome from each parent.