Study the following and identify the correct answer: Mother Father Children Case – I Normal With disease Daughters always with disease Case – II With disease Normal Sons and daughters could show disease

Case – I Case – II X-linked dominant disease Autosomal recessive disease

Case – I Case – II Autosomal recessive disease X-linked recessive disease

Case – I Case – II X-linked recessive disease Autosomal dominant disease

Case – I Case – II Autosomal dominant disease X-linked dominant disease

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 3>Q 8

MEDIUM

NEET

IMPORTANT

Earn 100

Consider the following pedigree chart and identify the given trait:

50% studentsanswered this correctly

Important Questions on Principles of Inheritance and Variation

MEDIUM

NEET

IMPORTANT

Biology Crash Course NEET>Chapter 27 - Principles of Inheritance and Variation>Level 3>Q 9

Study the following and identify the correct answer:

	Mother	Father	Children
Case – I	Normal	With disease	Daughters always with disease
Case – II	With disease	Normal	Sons and daughters could show disease

EASY

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IMPORTANT

Biology Crash Course NEET>Chapter 27 - Principles of Inheritance and Variation>Level 3>Q 10

A pedigree is shown below for a disease that is autosomal dominant. The genetic make up of the first generation is

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IMPORTANT

Biology Crash Course NEET>Chapter 27 - Principles of Inheritance and Variation>Level 3>Q 11

A human male is heterozygous for autosomal genes A, B and G. He is also homozygous for haemophilic gene h. What proportion of his sperm will be abgh:-

MEDIUM

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IMPORTANT

Biology Crash Course NEET>Chapter 27 - Principles of Inheritance and Variation>Level 3>Q 12

Given below is a pedigree. Which of the following conclusion drawn is correct?

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Biology Crash Course NEET>Chapter 27 - Principles of Inheritance and Variation>Level 3>Q 13

Red and tall dominant character hybrid plant when crossed with recessive white dwarf plant (RrTt x rrtt). What will be the ratio of respective four combinations red tall, red dwarf, white tall and white dwarf plants in the next generation :

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IMPORTANT

Biology Crash Course NEET>Chapter 27 - Principles of Inheritance and Variation>Level 3>Q 14

The karyotype given below is related to

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IMPORTANT

Biology Crash Course NEET>Chapter 27 - Principles of Inheritance and Variation>Level 3>Q 17

A mother in a family of five daughters is expecting her sixth baby. The chance of its being a son is ___.

HARD

NEET

IMPORTANT

Biology Crash Course NEET>Chapter 27 - Principles of Inheritance and Variation>Level 3>Q 19

A man and a woman, who do not show any apparent signs of a certain inherited disease, have seven children (2 daughters and 5 sons). Three of the sons suffer from the given disease, but none of the daughters are affected. Which of the following mode of inheritance do you suggest for this disease?

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