Question

After replication of a dog's cell, which has a 2n number of 78, how many chromosomes will be in the cell?


39


156


118


78

Answer 1

In a dog cell with a diploid number (2n) of 78, the total number of chromosomes before replication is 78. After replication, each chromosome is duplicated, but the total number of unique chromosomes remains the same. Therefore, after replication, the cell will still have 78 chromosomes, but each will consist of two sister chromatids.

The number of chromosomes in the cell after replication will still be **78**.