28. You perform a cross between two true-breeding strains of zucchini. One has green fruit and the other has yellow fruit. The F, plants are all green, but when these are crossed, the F₂ plants consist of 9 green: 7 yellow. a. Explain this result. What were the genotypes of the two parental strains? b. Indicate the phenotypes, with frequencies, of the progeny of a testcross of the F, plants. c. Describe the epistasis interactions observed.

Q: Define impotence

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Q: Livingstone Ⓒ BIODIDAC 964/96

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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.