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Marriages between close relatives should be avoided because it includes more
(a)Recessive alleles to come together.
(b)Mutations
(c)Multiple births
(d)Blood group abnormalities

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Important Questions on Principles of Inheritance and Variation
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Inheritance of ABO blood groups illustrates

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Biologically, marriage is prohibited between.

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Pleiotropy is the term in which a gene influences more than one trait. Its example is

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Skin colour in rodents. is controlled by four alleles, the possible genotypes are

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Multiple alleles can be found only when :

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An example of the quantitative trait in man is:

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The phenotypic ratio in the Generation for three pairs of polygenes are

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A dihybrid ratio of 1:4:6:4:1 is obtained instead of 9:3:3:1. This is an example of?
