NEET Botany Principles of Inheritance and Variation NEET s MCQ Questions - Practice Now

Question 1

The production of gametes by the parents, formation of zygotes, the F1 and F2 plants, can be understood from diagram called:

Accepted Answer

Punnett square

Answer

Punch square

Answer

Net square

Answer

Bullet square

Question 2

The incorrect statement with regard to Haemophilia is ________.

Accepted Answer

It is a dominant disease

Answer

It is a recessive disease

Answer

A single protein is involved in the clotting in blood is affected

Answer

It is a sex-linked disease

Question 3

What is the genetic disorder in which an individual has an overall masculine development gynaecomastia, and is sterile?

Accepted Answer

Klinefelters syndrome

Answer

Turner's syndrome

Answer

Edward syndrome

Answer

Down syndrome

Question 4

A human female with Turners syndrome :

Accepted Answer

has 45 chromosomes with XO

Answer

has one additional X chromosome

Answer

Exhibits male characters

Answer

Is able to produce children with normal husband

Question 5

How many pairs of contrasting characters in pea plants were studied by Mendel in his experiments?

Accepted Answer

Seven

Answer

Five

Answer

Six

Answer

Eight

Question 6

If two persons with AB blood group marry and have sufficiently large number of children, these children could be classified as A blood group: AB blood group: B blood group in 1:2:1 ratio. Modern technique of protein electrophoresis reveals presence of both A and B type proteins in AB blood group individuals. This is an example of _________.

Accepted Answer

Co-dominance

Answer

Incomplete dominance

Answer

Partial dominance

Answer

Complete dominance

Question 7

Match the items of Column-l with Column-ll

Column-1	Column-II
(a) XX-XO method of Sex Determination	i. Turners Syndrome
(b) XX-XY method of Sex Determination	ii. Female Heterogametic
(c) Karyotype-45	iii. Grasshopper
(d) ZW-ZZ method of Sex Determination	iv. Female homogametic

Select the correct option from the following.

Accepted Answer

a-iii , b-iv , c-i , d-ii

Answer

a-iv , b-ii , c-i , d-iii

Answer

a-ii , b-iv , c-i , d-iii

Answer

a-i , b-iv , c-ii , d-iii

Question 8

Which one from those given below is the period for Mendels hybridization experiments?

Accepted Answer

1856 - 1863

Answer

1840 - 1850

Answer

1857-1869

Answer

1870 - 1877

Question 9

Which one of the following cannot be explained on the basis of Mendels Law of Dominance?

Accepted Answer

Alleles do not show any blending and both the characters recover as such as F₂generations.

Answer

Factors occur in pairs

Answer

The discrete unit controlling a particular character is called a factor

Answer

Out of a pair of factors, one is dominant and the other recessive

Question 10

The phenotype of an organism is the result of ______________

Accepted Answer

Genotype and environment interactions

Answer

Mutations and linkages

Answer

Cytoplasmic effects and nutrition

Answer

Environmental changes and sexual dimorphism

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