In a series of crosses involving pea plants that have round or wrinkled seeds (round is dominant to wrinkled) and yellow or green seeds (yellow is dominant to green), the following ratios were observed in the progeny: Parents ----> Progeny a) round, green x wrinkled, yellow -----> 100% round, yellow b) round, yellow x round, yellow -----> 9/16 round, yellow 3/16 round, green 3/16 wrinkled, yellow 1/16 wrinkled, green C) round, yellow x round, yellow -----> 3/4 round, yellow 1/4 wrinkled, yellow d) wrinkled, yellow x round, yellow ---> 6/16 wrinkled, yellow 2/16 wrinkled, green 6/16 round, yellow 2/16 round, green On the basis of these progeny ratios, determine a possible genotype for each of the parent plants in each set of crosses (a,b, c, and d). Sometimes more than one genotype is possible, but you need only suggest one.

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A: Answer:

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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.