Match column I with column II and find the correct answer Column I Column II (A) Monoploidy ( 1 ) 2 n - 1 (B) Monosomy ( 2 ) 2 n + 1 (C) Nullisomy ( 3 ) 2 n + 2 (D) Trisomy ( 4 ) 2 n - 2 (E) Tetrasomy ( 5 ) n ( 6 ) 3 n

( A ) - ( 5 ) , ( B ) - ( 1 ) , ( C ) - ( 4 ) , ( D ) - ( 2 ) , ( E ) - ( 3 )

( A ) - ( 5 ) , ( B ) - ( 2 ) , ( C ) - ( 4 ) , ( D ) - ( 1 ) , ( E ) - ( 3 )

( A ) - ( 6 ) , ( B ) - ( 5 ) , ( C ) - ( 3 ) , ( D ) - ( 4 ) , ( E ) - ( 2 )

( A ) - ( 2 ) , ( B ) - ( 1 ) , ( C ) - ( 3 ) , ( D ) - ( 6 ) , ( E ) - ( 5 )

( A ) - ( 1 ) , ( B ) - ( 5 ) , ( C ) - ( 3 ) , ( D ) - ( 2 ) , ( E ) - ( 4 )

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

E M B I B E

NTA Errorless Biology Volume-2>Chapter 5 - Principles of Inheritance and Variation>Ordinary Thinking>Q 58

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Pick out the correct statements
(i) Haemophilia is a sex-linked recessive disease
(ii) Down's syndrome is due to aneuploidy
(iii) Phenylketonuria is an autosomal dominant gene disorder
(iv) Phenylketonuria is an autosomal recessive gene disorder
(v) Sickle-cell anaemia is an X-linked recessive gene disorder

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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>Ordinary Thinking>Q 59

Match column I with column II and find the correct answer

	Column I		Column II
(A)	Monoploidy	$(1)$	$2 n - 1$
(B)	Monosomy	$(2)$	$2 n + 1$
(C)	Nullisomy	$(3)$	$2 n + 2$
(D)	Trisomy	$(4)$	$2 n - 2$
(E)	Tetrasomy	$(5)$	$n$
		$(6)$	$3 n$

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NTA Errorless Biology Volume-2>Chapter 5 - Principles of Inheritance and Variation>Ordinary Thinking>Q 60

Height is

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NTA Errorless Biology Volume-2>Chapter 5 - Principles of Inheritance and Variation>Ordinary Thinking>Q 61

Which one of the following is not a mutagen

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NTA Errorless Biology Volume-2>Chapter 5 - Principles of Inheritance and Variation>Ordinary Thinking>Q 62

Mutation rates are affected by _____.

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NTA Errorless Biology Volume-2>Chapter 5 - Principles of Inheritance and Variation>Ordinary Thinking>Q 63

A mutation is most likely to have a selective advantage in evolution if

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NTA Errorless Biology Volume-2>Chapter 5 - Principles of Inheritance and Variation>Ordinary Thinking>Q 64

Which one of the following is a wrong statement regarding mutations?

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NTA Errorless Biology Volume-2>Chapter 5 - Principles of Inheritance and Variation>Ordinary Thinking>Q 65

The gene for diabetes mellitus is

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NTA Errorless Biology Volume-2>Chapter 5 - Principles of Inheritance and Variation>Ordinary Thinking>Q 66

Gynaecomastia is a symptom of

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