Hexaploid Wheat Was Produced Synthetically by He and Coworkers

question 21

Multiple Choice

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?

• A) Aegilops tauschii contributed four chromosomes by failing to complete meiosis after chromosome replication, and T. turgidum contributed two chromosomes.
• B) Aegilops tauschii contributed two chromosomes, and T. turgidum contributed four chromosomes.
• C) Each parent contributed equally to the genome of the offspring.
• D) The hexaploid number appeared following mitosis with no subsequent cell division.

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