Genetics and Evolution-Heredity and Variation [NEET (2024 Updated)-National Eligibility cum Entrance Test (Medical) Biology]: Questions 6 - 10 of 95

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Question 6

Question MCQ▾

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.

Dominance

b.

Heredity

c.

Inheritance

d.

Co-dominance

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Question 7

Question MCQ▾

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.

3,1 and 2

b.

1,3, and 2

c.

2,1 and 3

d.

1,2 and 3

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Question 8

Question MCQ▾

Sex of a human child is determined ass

Choices

Choice (4)Response

a.

Size of the egg at the time of fertilization.

b.

Sex chromosome of mother.

c.

Sex chromosome of father.

d.

Size of the sperm at the time of fertilization.

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Question 9

Question MCQ▾

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.

50% sons and 50% daughters (carrier) .

c.

All the sons

d.

All the daughters.

Edit

Question 10

Question MCQ▾

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.

All red-flowered plants.

b.

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

c.

All white-flowered plants.

d.

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

Edit