Genetics and Evolution-Heredity and Variation (NEET Biology): Questions 7 - 11 of 67

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Question number: 7

» 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

Question number: 8

» Genetics and Evolution » Heredity and Variation » Chromosomes and Genes

MCQ▾

Question

Sex of a human child is determined ass

Choices

Choice (4) Response
a.

Size of the egg at the time of fertilization.

b.

Size of the sperm at the time of fertilization.

c.

Sex chromosome of father.

d.

Sex chromosome of mother.

Question number: 9

» Genetics and Evolution » Heredity and Variation » Sex Determination-in Humans, Birds, Honey Bee

MCQ▾

Question

If mother is a carrier for colour blindness and father is normal, then in the offsprings this disease may be seen in

Choices

Choice (4) Response
a.

All the sons and not in daughters.

b.

All the sons

c.

All the daughters.

d.

50 % sons and 50 % daughters (carrier).

Question number: 10

» Genetics and Evolution » Heredity and Variation » Mendelian Inheritance

MCQ▾

Question

Mendel crossed a pure white-flowered recessive pea plant with a dominant pure red-flowered plant. The first generation of hydrids from the cross should show

Choices

Choice (4) Response
a.

75 % red-flowered and 25 % white-flowered plants.

b.

50 % white-flowered and 50 % red-flowered plants.

c.

All white-flowered plants.

d.

All red-flowered plants.

Question number: 11

» Genetics and Evolution » Heredity and Variation » Chromosomes and Genes

MCQ▾

Question

The evidence for crossing over which occurs at four stranded stage and not at two stranded stage of the chromosomes, comes from

Choices

Choice (4) Response
a.

Studies of meiosis in maize.

b.

Studies on linkage maps of chromosomes in Drosophila.

c.

4: 4 arrangement of ascospores in Neurospora.

d.

2: 2: 2: 2 arrangement of ascospores in Neurospora.

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