When both alleles of a pair are fully expressed in a heterozygote, they are called

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Important Questions on Heredity and Variation

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IMPORTANT

A TEXT BOOK OF BIOLOGY CLASS 12>Chapter 5 - Heredity and Variation>EXERCISE>Q 94

Among the seven pairs of contrasting traits in pea plant as studied by Mendel, the number of traits related to flower, pod and seed respectively were

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12th West Bengal Board

IMPORTANT

A TEXT BOOK OF BIOLOGY CLASS 12>Chapter 5 - Heredity and Variation>EXERCISE>Q 95

Depending upon the distance between any two genes, which is inversely proportional to the strength of linkage, crossover will vary from

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IMPORTANT

A TEXT BOOK OF BIOLOGY CLASS 12>Chapter 5 - Heredity and Variation>EXERCISE>Q 96

Some of the dominant traits studied by Mendel were

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A TEXT BOOK OF BIOLOGY CLASS 12>Chapter 5 - Heredity and Variation>EXERCISE>Q 97

The colour based contrasting traits in several contrasting pairs, studied by Mendel in pea plant were

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12th West Bengal Board

IMPORTANT

A TEXT BOOK OF BIOLOGY CLASS 12>Chapter 5 - Heredity and Variation>EXERCISE>Q 98

In a di-hybrid cross where two parents differ in two pairs of contrasting traits like seed colour yellow (YY) and seed colour green (yy) with seed shape round (RR) and seed shape wrinkled (rr), the number of green coloured seeds (yy) among sixteen products of the F2 generation will be

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A TEXT BOOK OF BIOLOGY CLASS 12>Chapter 5 - Heredity and Variation>EXERCISE>Q 99

Which is correct for Turner's syndrome?

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IMPORTANT

A TEXT BOOK OF BIOLOGY CLASS 12>Chapter 5 - Heredity and Variation>EXERCISE>Q 1

Select the correct answer and fill in the blanks.

Scientist _____ first described linkage in Drosophila. (Darwin, Morgan, Mendel, Muller)

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