Hexaploid wheat was produced synthetically by He and coworkers. They mated the diploid species, Aegilops tauschii, and the tetraploid species, T. turgidum. Which of the following is an accurate statement about the relative contribution of each parent to the genome of the hexaploid offspring?

Question

Quizplus · Accepted Answer

Aegilops tauschii is a diploid species with 14 chromosomes, while T. turgidum is a tetraploid species with 28 chromosomes. Therefore, the diploid species would contribute 2 sets (2x14 = 28) of chromosomes, while the tetraploid species would contribute 1 set (4x7 = 28) of chromosomes, resulting in a total of 6 sets of chromosomes (2n=6x=42) in the hexaploid offspring. Thus, Aegilops tauschii contributed two chromosomes, and T. turgidum contributed four chromosomes.

Hexaploid Wheat Was Produced Synthetically by He and Coworkers