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Question

In tomato, genotype aabbcc produces 100gm tomatoes and AABBCC produces 160gm tomatoes what is the contribution of each polygenes in the production of tomatoes?

A
10gm
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B
20gm
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C
30gm
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D
40gm
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Solution

The correct option is A 10gm
The homozygous recessive genotype is aabbcc.
The homozygous dominant genotype is AABBCC.
So the total number of alleles in each genotype is 6.
Genotype aabbcc produces 100 g of tomatoes.
So the value of homozygous recessive is 100 g.
AACC produces 160g tomatoes.
So the value of homozygous dominant is 160 g.
The contribution of polygene in the production can calculate by a formula.
i.e. ( the value of homozygous dominant - the value of homozygous recessive) ÷ the total number of alleles
∴ 60/6 = 10 g.
So, the correct option is option A.

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