NEET 2019 | Principles of Inheritance and Variation Question 50 | Biology

A gene locus has two alleles A, a. If the frequency of dominant allele A is 0.4, then what will be the frequency of homozygous dominant, heterozygous and homozygous recessive individuals in the population?

0.16(AA); 0.48 (Aa); 0.36(aa)

0.16 (AA); 0.36(Aa); 0.48(aa)

0.36 (AA); 0.48 (Aa); 0.16 (aa)

0.16 (AA); 0.24 (Aa); 0.36 (aa)

NEET 2019

MCQ (Single Correct Answer)

-1

Select the incorrect statement.

In domesticated fowls, sex of progeny depends on the type of sperm rather than egg.

Human males have one of their sex-chromosome much shorter than the other.

Male fruit fly is heterogametic

In male grasshoppers, 50% of sperms have no sex-chromosome.

NEET 2019

MCQ (Single Correct Answer)

-1

The frequency of recombination between gene pairs on the same chromosome as a measure of the distance between genes was explained by :

Alfred Sturtevant

Gregor J. Mendel

Sutton Boveri

T.H. Morgan

NEET 2019

MCQ (Single Correct Answer)

-1

In Antirrhinum (Snapdragon), a red flower was crossed with a white flower and in F₁ generation, pink flowers were obtained. When pink flowers were selfed, the F₂ generation showed white, red and pink flowers. Choose the incorrect statement from the following :

Ratio of F₂ is $${1 \over 4}$$ (Red) : $${2 \over 4}$$ (Pink) : $${1 \over 4}$$ (White)

Law of Segregation does not apply in this experiment

This experiment does not follow the Principle of Dominance

Pink colour in F₁ is due to incomplete dominance

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NEET Subjects

Biology

Botany

Zoology

Human Health and Diseases Body Fluids and Its Circulation Locomotion and Movement Neural Control and Coordination Reproduction in Organisms Reproductive Health Structural Organisation in Animals Digestion and Absorption Excretory Products and Their Elimination Chemical Coordination and Integration Human Reproduction Animal Kingdom Breathing and Exchange of Gases Evolution