Joel is comparing two slides showing chromosomes in a sperm cell and a skin cell of a dog. he finds that the sperm cell has 39 chromosomes. how many chromosomes can he expect in the skin cell

The total number of chromosome in a skin cell is equal to 78

Explanation:

The sperm is usually haploid i.e it will contains only half of the total chromosome number.

Therefore , if the total number of chromosomes is "n" , then the number of chromosome in the sex cell will be "n/2"

Thus, 39 chromosome is just the half of total chromosome number.

Now a skin cell is a diploid cell and it will contain all the chromosome i.e "n"

As we know

Hence, the total number of chromosome in a skin cell is equal to 78

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