The weight of a fruit in a certain variety of squash is varies. When a plant that produces 6-lb fruits is crossed with a plant that produces 2-lb fruits, all offspring produce fruits that weigh 4 lbs each. In the F2 offspring, the variation in weight varies by 0.5 lbs from each. a. How many genes are involved? b. What ratio of squash in the F2 would weigh over 4.5 lbs? 1 2 3 3 4 6 I4 5 [10 10] 5 ] 6 15 20 15 6 17 21 35 35 21 7 1 8 28 56 70 56 28 8 1 I9 [ 36 I I 36 I 9 I 1 84 126 126 84 10 45 120210 252 210120 45 10 1 1 11 55 165 330 462 462 330 165 55 11 1

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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.