Two diploid (2N) species of wheat are crossed T. aestivuma (N=20) and T. militinae (N=43), producing mostly infertile hybrid progeny. Rarely one of these progeny is particularly large and also fertile. If one of these fertile hybrids was crossed back to a T. militinae, how many bivalents would you expect to observe in meiosis I within the sterile plants produced by this second cross?

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Inheritance and Mendelian Genetics

Inheritance means the passing of traits to offspring from parents. These traits could be passed either through asexual reproduction or sexual reproduction. The offspring receives the genetic material from the parents. Mendelian inheritance is a certain biological inheritance that follows the rules and principles laid down by Gregor Mendel in 1865. The initial hypothesis was considered wrong, but other inheritance theories modified the concept of inheritance and thus genetics.