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You must write down the formula you are using and then plug numbers into that formula...

You must write down the formula you are using and then plug numbers into that formula correctly to receive full credit.

Five genes are known to work together according to the multiple gene hypothesis to determine weight, a polygenic trait. Individuals of genotype AAbbDdEEFF weigh 24 lbs. and individuals of genotype AabbDdEeff weigh 16 lbs. Calculate the contribution of one additive allele to weight. Capital letters represent additive alleles, and lower case letters represent non-additive alleles.

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Answer #1

Ans- Weight of individual of genotype AAbbDdEEFF = 24lbs

Weight of individual of genotype AabbDdEeff = 16lbs

let weight of individual with all non-additive genes aabbddeeff = xlbs

Weight of individual with genotype AAbbDdEEFF= x + 7 *( weight added by each additive allele  (y) = 24 .....(1)

Weight of individual with genotype AabbDdEeff = x + 3y = 16 ............(2)

Subtract equation 1 and 2

x+7y - (x+3y) = 24-16

x+7y-x-3y = 8

4y = 8

y=2

Therefore, contribution of each additive allele = 2lbs  

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