Question

Species A and species B are closely related. Both are diploid with A having 2n = 12 and B having 2n = 14. what kind of chromosome sets does this have?

a) Autotetraploid
b) Allotetraploid
c) Autotriploid
d) Allotriploid

Answer 1

Species A is an autotetraploid with four chromosome sets, and species B is an allotetraploid with four chromosome sets derived from two different species.

Step-by-step explanation:

Species A and species B are closely related and both are diploid organisms. Diploid organisms have two sets of chromosomes in each somatic cell. In this case, species A has 2n = 12, meaning it has 12 chromosomes, and species B has 2n = 14, meaning it has 14 chromosomes.

Since these numbers are greater than the typical diploid number, they have extra chromosome sets, making them polyploid organisms. Specifically, species A is considered an autotetraploid with four chromosome sets, and species B is considered an allotetraploid with four chromosome sets derived from two different species.