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Question

If the two genes present on different loci porduce the same effect when present alone but interact to form a new trait when present together are called as

A
Complementary gene
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B
Supplementary gene
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C
Duplicate gene
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D
Inhibitory gene
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Solution

The correct option is A Complementary gene
Gene expressions and interactions are of different types. These are dihybrid ratio, supplementary ratio, complementary ratio, polymerism, epistatic ratio, inhibitory ratio, duplicate ratio and cumulative ratio. In complementary ratio, two genes present on different loci produce the same effect when present alone. However, presence of both genes is results in the development of new trait. In this, the ratio is 9:7.
Thus, the correct answer is option A.

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