Genetics and Evolution (NEET Biology): Questions 7 - 12 of 154

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Question number: 7

» Genetics and Evolution » Heredity and Variation » Chromosomal Disorders in Humans

MCQ▾

Question

In man, which of the following genotypes and phenotypes may be the correct result of aneuploidy in sex chromosomes

Choices

Choice (4) Response
a.

22 pairs + XX females

b.

22 pairs + XXXY females

c.

22 pairs + Y females

d.

22 pairs + XXY males

Question number: 8

» Genetics and Evolution » Molecular Basis of Inheritance » Structure of DNA and RNA

MCQ▾

Question

Which form of RNA has a structure resembling clover leaf?

Choices

Choice (4) Response
a.

hn RNA

b.

m RNA

c.

r RNA

d.

t RNA

Question number: 9

» Genetics and Evolution » Heredity and Variation » Mendelian Inheritance

MCQ▾

Question

If in a dihybrid cross Mendel had used two such characters which are linked, he would have faced difficulty in explaining the results on the basis of his

Choices

Choice (4) Response
a.

Law of multiple factor hypothesis.

b.

Law of dominance.

c.

Law of independent assortment.

d.

Law of segregation.

Question number: 10

» Genetics and Evolution » Molecular Basis of Inheritance » Transcription

MCQ▾

Question

Okazaki fragments are joined in correct sequence by

Choices

Choice (4) Response
a.

Primase

b.

DNA polymerase

c.

RNA polymerase

d.

DNA ligase

Question number: 11

» Genetics and Evolution » Heredity and Variation » Incomplete Dominance

MCQ▾

Question

Pure tall plants are crossed with pure dwarf plants. In the F1 generation all plants were tall. These tall plants of F1 generation were selfed and the ratio of tall to dwarf plants obtained was 3: 1. This is called

Choices

Choice (4) Response
a.

Inheritance

b.

Co-dominance

c.

Heredity

d.

Dominance

Question number: 12

» Genetics and Evolution » Heredity and Variation » Mendelian Inheritance

MCQ▾

Question

What is the correct sequence of the following events?

1. Formation of the chromosome theory of heredity.

2. Experiments which proved that DNA is the hereditary material.

3. Mendel’s laws of inheritance-discovery.

Choices

Choice (4) Response
a.

1, 3, and 2

b.

3, 1 and 2

c.

2, 1 and 3

d.

1, 2 and 3

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