A variety of squash has fruits that weigh about 5kg each. In a second variety, t

Question

A variety of squash has fruits that weigh about 5kg each. In a second variety, the average weight is 2kg. When the two varieties are crossed, the F1 produces fruit with an average weight of 3.5kg. when two of these are crossed, a range of fruit weights is found, from 2kg to 5kg. of two hundred offspring, three produces fruits weighting 5kg and three produce fruits 2kg in weight. how many allelic pairs are involved in the weight difference between the varieties, and approximately how much does each effective gene contribute to the difference?

Explanation / Answer

3/200 = 1/64 = (¼)3 : 3 gene pairs 5 – 2 = 3 3/6 = ½ = 0.5 kg contribution 2kg: aabbcc 3.5kg: AaBbCc 4kg: AABbCc 4.5kg: AABBCc 5kg : AABBCC 5kg: AABBCC x 2 kg: aabbcc 3.5: AaBbCc ---------------------F 1 3.5Kg: AaBbCc X 3.5kg : AaBbCc By using checker board , we will get above answers were derived

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