Inheritance of roan coat in cattle is an example of

Important Questions on Principles of Inheritance and Variation

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MTG OBJECTIVE NCERT AT YOUR FINGERTIPS BIOLOGY CLASS XI + XII>Chapter 28 - Principles of Inheritance and Variation>MCQS CORNER>Q 34

A cow with red coat is crossed with a bull having white coat. Their offspring produced in ${\mathrm{F}}_1$ generation showed roan coat. This effect is produced due to juxtaposition of small patches of red and white colour. What can be assumed about the gene controlling coat colour in cattle?

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MTG OBJECTIVE NCERT AT YOUR FINGERTIPS BIOLOGY CLASS XI + XII>Chapter 28 - Principles of Inheritance and Variation>MCQS CORNER>Q 35

ABO blood grouping in human beings cites the example of

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MTG OBJECTIVE NCERT AT YOUR FINGERTIPS BIOLOGY CLASS XI + XII>Chapter 28 - Principles of Inheritance and Variation>MCQS CORNER>Q 36

In mice, $\mathrm{Y}$ is the dominant allele for yellow fur and $\mathrm{y}$ is the recessive allele for grey fur. Since $\mathrm{Y}$ is lethal when homozygous, the result of cross $\mathrm{Y}\mathrm{y}\times \mathrm{Y}\mathrm{y}$ will be

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MTG OBJECTIVE NCERT AT YOUR FINGERTIPS BIOLOGY CLASS XI + XII>Chapter 28 - Principles of Inheritance and Variation>MCQS CORNER>Q 37

In Mendelian dihybrid cross, when heterozygous 'round-yellow' are self-crossed, 'round-green' offsprings are represented by the genotype:

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MTG OBJECTIVE NCERT AT YOUR FINGERTIPS BIOLOGY CLASS XI + XII>Chapter 28 - Principles of Inheritance and Variation>MCQS CORNER>Q 38

Match Column I with Column II and select the correct option from the given codes.

	Column I		Column II
(a)	Dihybrid test cross	(i)	$9:3:3:1$
(b)	Law of segregation	(ii)	Dihybrid cross
(c)	Law of independent assortment	(iii)	$1:1:1:1$
(d)	ABO blood group in man	(iv)	Purity of gametes
		(v)	Multiple allelism

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MTG OBJECTIVE NCERT AT YOUR FINGERTIPS BIOLOGY CLASS XI + XII>Chapter 28 - Principles of Inheritance and Variation>MCQS CORNER>Q 39

The percentage of ab gamete produced by AaBb parent will be

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MTG OBJECTIVE NCERT AT YOUR FINGERTIPS BIOLOGY CLASS XI + XII>Chapter 28 - Principles of Inheritance and Variation>MCQS CORNER>Q 40

When a cross is made between a tall plant with yellow seeds (TtYy) and a tall plant with green seeds (Ttyy), what is true regarding the proportions of phenotypes of the offsprings in ${\mathrm{F}}_1$ generation?

	The proportion of Tall and Green	The proportion of Dwarf and Green
(i)	$\raisebox{1ex}{$3$}\!\left/ \!\raisebox{-1ex}{$8$}\right.$	$\raisebox{1ex}{$1$}\!\left/ \!\raisebox{-1ex}{$8$}\right.$
(ii)	$\raisebox{1ex}{$2$}\!\left/ \!\raisebox{-1ex}{$8$}\right.$	$\raisebox{1ex}{$1$}\!\left/ \!\raisebox{-1ex}{$8$}\right.$
(iii)	$\raisebox{1ex}{$1$}\!\left/ \!\raisebox{-1ex}{$8$}\right.$	$\raisebox{1ex}{$3$}\!\left/ \!\raisebox{-1ex}{$8$}\right.$
(iv)	$\raisebox{1ex}{$2$}\!\left/ \!\raisebox{-1ex}{$8$}\right.$	$\raisebox{1ex}{$2$}\!\left/ \!\raisebox{-1ex}{$8$}\right.$

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MTG OBJECTIVE NCERT AT YOUR FINGERTIPS BIOLOGY CLASS XI + XII>Chapter 28 - Principles of Inheritance and Variation>MCQS CORNER>Q 41

How many types of gametes can be produced by a diploid organism who is heterozygous for 4 loci?