Two genes are located on the same chromosome and are known tobe 12 mu apart. An AABB individual was crossed to an aabb individualto produce AaBb offspring. The AaBb offspring were thentestcrossed to aabb individuals.If the testcross produces 1000 offspring, what are the predictednumbers of offspring with each of these four genotypes: AaBb,Aabb, aaBb, and aabb?

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A:

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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.