If a colorblind woman marries a normal visioned man, their sons will be:

One half normal and one half colorblind

Three fourth colour blind and one fourth normal

A testcross is done to find out

The genotype of an individual by examining the phenotypes of its offsprings from a particular mating

The genotype of an individual for testing for its DNA content

To identify the genotype of recessive parent

Whether two species can interbreed

Identify the incorrect statement from the following.

When Morgan crossed wild type Drosophila for eye colour and body colour with mutated form like white eye and yellow body the recombination was more

When genes are tightly packed on the chromosomes, recombinations are almost nil

Incomplete dominance expression is also noticed in garden pea

Multiple alleles for a character in a population found on the same locus on homologous chromosomes

E M B I B E

Biology Crash Course NEET>Chapter 27 - Principles of Inheritance and Variation>Level 2>Q 32

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Multiple alleles control the inheritance of

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Important Questions on Principles of Inheritance and Variation

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Biology Crash Course NEET>Chapter 27 - Principles of Inheritance and Variation>Level 2>Q 34

If Aabb x aaBb, then genotypic ratio of its progeny will be :-

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Biology Crash Course NEET>Chapter 27 - Principles of Inheritance and Variation>Level 2>Q 36

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 genetic disorder.
IV. Phenylketonuria is an autosomal recessive genetic disorder.
V. Sickle cell anaemia is an X-linked recessive disorder.

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Biology Crash Course NEET>Chapter 27 - Principles of Inheritance and Variation>Level 2>Q 37

This pedigree is of a rare trait, in which children have extra fingers and toes. Which one of the following patterns of inheritance is consistent with this pedigree?
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