Question

an earthworm has 36 chromosomes in each of its diploid cells. how many chromosomes would be in each of its gametes?
12
18
24
36

Explanation:

Step1: Recall chromosome - number rule

Gametes are haploid cells. In diploid - to - haploid transition, chromosome number is halved.

Step2: Calculate chromosome number in gametes

Given diploid cell has 36 chromosomes. So, number of chromosomes in gametes is $\frac{36}{2}=18$.

Answer:

B. 18