Neet Questions Principles Of Inheritance And Variation

The importance of inheritance and variation for NEET aspirants cannot be overstated. It forms the basis of many advanced topics and thus, students must ensure they are well-versed in this chapter. To help you out, we have selected some important questions from previous years’ exams.

Important NEET Questions on Class 12 Chapter 5: Principles of Inheritance and Variation

1. In humans, sex is determined by chromosomes

(NEET 2016)

A. Sex Chromosomes of the Father

B. Sex Chromosomes of the Mother

C. Quantity of Sperm in the Semen

D. Size of Egg to be Fertilized

Two alleles of a gene that both show their effects in the phenotype of the organism is known as codominance.

(NEET 2015)

A. One allele is dominant over the other

B. Both alleles are independently expressed in the heterozygote

C. Alleles tightly linked on the same chromosome

D. Alleles that are Recessive to each other

In his classic experiment on peas, Mendel did not utilize any form of genetic engineering.

(NEET 2015)

A. Seed Shape

B. Seed Colour

C. Pod Length

D. all of the above

What was the number of pairs of contrasting characters in pea plants studied by Mendel in his experiments?

(NEET 2015)

A. 9

B. 5

C. 6

D. 7

A disorder caused by an autosomal primary nondisjunction is

(NEET 2017)

A. Turner’s Syndrome

B. Down’s Syndrome

C. Klinefelter’s Syndrome

D. Sickle Cell Anemia

The mechanism that causes a gene to move from one linkage group to another is called Transposition.

(NEET 2016)

A. Translocation

B. Crossing Over

C. Duplication

D. None of the above

7. A true breeding plant is one that produces offspring with the same traits as the parent.

(NEET 2016)

A. Always Homozygous Recessive in its Genetic Constitution

B. Produced due to cross-pollination among unrelated plants

C. One that is able to reproduce without assistance

D. Near homozygous and produces offspring that are genetically similar to itself

The incorrect statement with regard to haemophilia is that it is contagious.

(NEET 2013)

A. It is a dominant disease

B. A single protein involved in the clotting of blood is impacted

C. It is a recessive genetic disease

D. None of the Above

The chances that this child would be colourblind are 50%, since both parents carry the recessive gene for colorblindness.

NEET 2012

A. 0%

B. 10%

C. 50%

D. 100%

10. Mutations can be induced with radiation or chemicals

(NEET 2011)

A. Gamma Radiations

B. Infrared Radiations

C. Ethylene

D. IAA

Question Answer Key

| 1 | A |

| 2 | B |

| 3 | C |

| 4 | D |

| 5 | B |

| 6 | A |

| 7 | D |

| 8 | A |

| 9 | A |

| 10 | A |

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