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 87

EASY

NEET

IMPORTANT

Earn 100

Pure homozygous offsprings in a dihybrid cross in the F₂ generation will be

50% studentsanswered this correctly

Important Questions on Principles of Inheritance and Variation

MEDIUM

NEET

IMPORTANT

NTA Errorless Biology Volume-2>Chapter 5 - Principles of Inheritance and Variation>Ordinary Thinking>Q 88

Hybrid vigour is induced by

MEDIUM

NEET

IMPORTANT

NTA Errorless Biology Volume-2>Chapter 5 - Principles of Inheritance and Variation>Ordinary Thinking>Q 89

When two genetic loci produce identical phenotypes in cis as well as in trans position, they are considered to be

EASY

NEET

IMPORTANT

NTA Errorless Biology Volume-2>Chapter 5 - Principles of Inheritance and Variation>Ordinary Thinking>Q 90

If in a garden pea plant, a cross is made between red flowered and white flowered plants. What will be the phenotypic ratio in

F_{2}

generation?

EASY

NEET

IMPORTANT

NTA Errorless Biology Volume-2>Chapter 5 - Principles of Inheritance and Variation>Ordinary Thinking>Q 91

Test cross of dihybrid ratio is

1 : 1 : 1 : 1

. It proves that

EASY

NEET

IMPORTANT

NTA Errorless Biology Volume-2>Chapter 5 - Principles of Inheritance and Variation>Ordinary Thinking>Q 92

Mendel's Principle of segregation means that the gamete cells always receive :-

EASY

NEET

IMPORTANT

NTA Errorless Biology Volume-2>Chapter 5 - Principles of Inheritance and Variation>Ordinary Thinking>Q 93

Mendel crossed a pure white-flowered recessive pea plant with a dominant pure red-flowered plant. The first generation of hybrids from the cross should show

EASY

NEET

IMPORTANT

NTA Errorless Biology Volume-2>Chapter 5 - Principles of Inheritance and Variation>Ordinary Thinking>Q 94

If in a dihybrid cross Mendel had used two such characters which have linked, he would have faced difficulty in explaining the results on the basis of his

Or
In Mendelism, linkage was not observed due to

EASY

NEET

IMPORTANT

NTA Errorless Biology Volume-2>Chapter 5 - Principles of Inheritance and Variation>Ordinary Thinking>Q 95

If dwarf pea plant was treated with Gibberellic acid, it grew as tall as the pure tall pea plant. If this treated plant is crossed with a pure tall plant then the phenotypic ratio of is likely to be