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In cattle, the coat colour red and white are two dominant traits, which express equally in F1, to produce roan (red and white colour in equal proportion). If F1 progeny are self-bred, the resulting progeny in F2 will have a phenotypic ratio (red: roan: white) is -

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Important Questions on Principles of Inheritance and Variation

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Alpha Question Bank for Medical: Biology>Chapter 27 - Principles of Inheritance and Variation>Exercise-2>Q 104
If DNA codons are ATG GAA, insertion of thymine after the first codon results in.
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Alpha Question Bank for Medical: Biology>Chapter 27 - Principles of Inheritance and Variation>Exercise-2>Q 105
According to Mendel, ……………segregate and…………… assort independently.
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Alpha Question Bank for Medical: Biology>Chapter 27 - Principles of Inheritance and Variation>Exercise-2>Q 106
The difference in colour between the new population and the old population is due to which evolutionary phenomenon?
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Alpha Question Bank for Medical: Biology>Chapter 27 - Principles of Inheritance and Variation>Exercise-3>Q 14
Which is correct about traits chosen by Mendel?
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Alpha Question Bank for Medical: Biology>Chapter 27 - Principles of Inheritance and Variation>Exercise-3>Q 15
Tallness (T-) is dominant over dwarfness (tt) while red flower colour (R-) is dominant over white colour (rr). A plant with genotype TtRr is crossed with plant of genotype ttrr. Percentage of progeny having tall plants with red flowers is
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Alpha Question Bank for Medical: Biology>Chapter 27 - Principles of Inheritance and Variation>Exercise-3>Q 16
Independent assortment is absent in case of
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Alpha Question Bank for Medical: Biology>Chapter 27 - Principles of Inheritance and Variation>Exercise-3>Q 17
In Pea, wrinkling of seeds is due to nonformation of starch because of the absence of an enzyme
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Alpha Question Bank for Medical: Biology>Chapter 27 - Principles of Inheritance and Variation>Exercise-3>Q 18
In complementary genes, the dihybrid ratio of 9: 3: 3: 1 is modified to