A diploid somatic cell from a rat has a total of 42 chromosomes (2n = 42). As in humans, sex chromosomes determine sex: XX in females and XY in males. What is the total number of chromosomes present in the cell during metaphase I of meiosis?
A) 21
B) 42
C) 84
D) 126
E) 168

Question

Quizplus · Accepted Answer

During metaphase I of meiosis, the cell is still diploid, so it contains the same number of chromosomes as a somatic cell, which is 42.

A Diploid Somatic Cell from a Rat Has a Total