A triploid cell contains three sets of homologous chromosomes. If a cell of a diploid species that normally has 42 chromosomes per cell is triploid, this cell would be expected to have which of the following sets of chromosomes?
A) 63 chromosomes in 31 1/2 pairs
B) 63 chromosomes in 21 sets of 3
C) 63 chromosomes, each with 3 sister chromatids
D) 21 chromosome pairs and 21 unique chromosomes

Question

Quizplus · Accepted Answer

If a diploid species has 42 chromosomes per cell, a triploid cell of that species would have 3 sets of 42 chromosomes, for a total of 126 chromosomes. These 126 chromosomes would be expected to exist in sets of 3, resulting in 21 sets of 3 chromosomes, as described in choice B.

A Triploid Cell Contains Three Sets of Homologous Chromosomes