Match the column I, II, and III Column I Column II Column III (A) Sickle Cell Anaemia (i) Due to recessive PP genes (P) Arrangement of valine in place of Glutamic acid (B) Phenylketonuria (ii) Due to absence of homogentisate oxidase enzyme (Q) Inborn error of metabolism (C) Alkaptonuria (iii) Follows Mendelian Principles (R) Urine turns black when exposed to air (D) Thalassaemia (iv) Characters caused by homozygous recessive genes (S) The required haemoglobin is not generated in the blood

( A - i v - P ) ( B - i - Q ) ( C - i i - R ) ( D - i i i - S )

( A - ii - S ) ( B - 1 ii - R ) ( C - 1 - Q ) ( D - iv - P )

( A - i v - P ) ( B - iii - R ) ( C - i - S ) ( D - i i - R )

( A - iii - R ) ( B - i - Q ) ( C - iv - P ) ( D - ii - S )

A tall true breeding garden pea plant is crossed with a dwarf true breeding garden pea plant. When the F 1 plants were selfed the resulting genotypes were in the ratio

1 : 2 : 1 :: Tall homozygous : Tall heterozygous : Dwarf

1 : 2 : 1 :: Tall heterozygous : Tall homozygous : Dwarf

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Two genes $' A'$ and $' B'$ are linked. In a dihybrid cross involving these two genes, the $F_{1}$ heterozygote is crossed with homozygous recessive parental type (aa bb). What would be the ratio of offspring in the next generation

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Important Questions on Principles of Inheritance and Variation

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NTA Errorless Biology Volume-2>Chapter 5 - Principles of Inheritance and Variation>NCERT>Q 17

In the

F_{2}

generation of a Mendelian dihybrid cross, the number of phenotypes and genotypes are

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NTA Errorless Biology Volume-2>Chapter 5 - Principles of Inheritance and Variation>Critical Thinking>Q 1

Which is Gynandromorph type of animal

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NTA Errorless Biology Volume-2>Chapter 5 - Principles of Inheritance and Variation>Critical Thinking>Q 2

The segregation of paired hereditary factors that Mendel postulated occurs during

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NTA Errorless Biology Volume-2>Chapter 5 - Principles of Inheritance and Variation>Critical Thinking>Q 3

A cell at telophase stage is observed by a student in a plant brought from the field. He tells his teacher that this cell is not like other cells at telophase stage. There is no formation of cell plate and thus the cell is containing more number of chromosomes as compared to other dividing cells. This would result in

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NTA Errorless Biology Volume-2>Chapter 5 - Principles of Inheritance and Variation>Critical Thinking>Q 5

A selection that acts to eliminate one extreme from an array of phenotypes is:

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NTA Errorless Biology Volume-2>Chapter 5 - Principles of Inheritance and Variation>Critical Thinking>Q 6

A tobacco plant heterozygous for a recessive character is self-pollinated and

1200

seeds are subsequently germinated. How many seedlings would have the parental genotype?

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NTA Errorless Biology Volume-2>Chapter 5 - Principles of Inheritance and Variation>Critical Thinking>Q 7

Match the column I, II, and III

Column I		Column II		Column III
(A)	Sickle Cell Anaemia	(i)	Due to recessive $PP$ genes	(P)	Arrangement of valine in place of Glutamic acid
(B)	Phenylketonuria	(ii)	Due to absence of homogentisate oxidase enzyme	(Q)	Inborn error of metabolism
(C)	Alkaptonuria	(iii)	Follows Mendelian Principles	(R)	Urine turns black when exposed to air
(D)	Thalassaemia	(iv)	Characters caused by homozygous recessive genes	(S)	The required haemoglobin is not generated in the blood

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NTA Errorless Biology Volume-2>Chapter 5 - Principles of Inheritance and Variation>Critical Thinking>Q 8

Find the odd one out, with respect to X-linkage:

Two genes 'A' and 'B' are linked. In a dihybrid cross involving these two genes, the F1 heterozygote is crossed with homozygous recessive parental type (aa bb). What would be the ratio of offspring in the next generation

Important Questions on Principles of Inheritance and Variation

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Two genes $' A'$ and $' B'$ are linked. In a dihybrid cross involving these two genes, the $F_{1}$ heterozygote is crossed with homozygous recessive parental type (aa bb). What would be the ratio of offspring in the next generation