Question

The domestic dog has 39 pairs of homologous chromosomes. A dog's somatic cells have ________ chromosomes and gametes have ________ chromosomes.

- 156; 78
- 39; 15
- 78; 39
- 78; 78
- 39; 39

Answer 1

Dogs have 39 pairs of homologous chromosomes in their somatic cells. Somatic cells have 39 pairs or 78 chromosomes, while gametes have 39 chromosomes.

Step-by-step explanation:

Dogs have 39 pairs of homologous chromosomes in their somatic cells. Somatic cells have double the number of chromosomes compared to gametes. Therefore, dog somatic cells have 39 pairs or 78 chromosomes, while gametes have half the number, which is 39 chromosomes.