Question

Arabidopsis thaliana has 2n = 10 chromosomes, and a close relative Capsella rubella has 2n = 16. You created a hybrid between them and suspect that it is an allotetraploid. If you are right, what possible chromosome numbers could the hybrid have?

A. 26
B. 33
C. 36
D. 42

Answer 1

The possible chromosome numbers for the hybrid between Arabidopsis thaliana and Capsella rubella could be 26.

Step-by-step explanation:

If Arabidopsis thaliana has 2n = 10 chromosomes and Capsella rubella has 2n = 16 chromosomes, and you suspect that the hybrid between them is an allotetraploid, then the possible chromosome numbers for the hybrid could be the sum of the chromosome numbers of the parent species. So, the possible chromosome numbers for the hybrid would be 2n = 10 + 2n = 16 = 2n = 26. Therefore, the correct answer is A. 26.