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Standard XII
Biology
Introduction to Cell Mediated Immunity
A gene whose ...
Question
A gene whose phenotypic effect kills the bearer is called
A
lethal
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B
pleiotropic
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C
supplementary
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D
complementary
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Solution
The correct option is
A
lethal
Lethal means able to cause death.
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Similar questions
Q.
(I) Pleiotropic genes have multiple phenotypic effects
(II) Multiple alleles exhibit the same phenotypic expression
(III) Cystic fibrosis and phenylketonuria are examples of pleiotropism
Q.
The ability of a gene to have multiple phenotypic effects is known as
Q.
(A) Pleiotropic genes have multiple phenotypic effect.
(B) Muliple alleles exhibit same phenotypic expression.
(C) Polygenes exhibit continuous variation.
Q.
Genes which have no phenotypic effect when present separately but interact to produce a particular phenotype are called
Q.
Assertion :The percentage frequency with which a gene successfully manifests its phenotypic effect is called expressivity. Reason: The extent or intensity of phenotypic expressions of certain genes may vary in different individuals due to environmental influences.
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