Which of the following are correct regarding linked genes?

I. are locaed near each other on the same chromosome.

II. violate the law of independent assortment

III. segregate together during meiosis

(1) Only I and II

(2) Only I and III

(3) Only II and III

(4) I, II, III

Subtopic:  Linkage |
 65%
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Consider the cross AaBb x AaBb. If the alleles for both genes exhibit complete dominance, what genotypic ratio is expected in the resulting offspring?

1. 1:1:1:1

2. 9:3:3:1

3. 3:6:3:1:2:1

4. 1:2:1:2:4:2:1:2:1

Subtopic:  Dihybrid Cross Analysis |
 73%
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Two phenotypically normal individuals have an affected child. What can we conclude about the parents?

1. they both carried the diesease allele

2. they are not the parents of the child

3. they are affected

4. no conclusions can be drawn

Subtopic:  Mendelian Disorders |
 91%
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In humans, the dominance relationship between the A and B alleles of ABO blood group gene is an example of

(1) complete dominance.

(2) incomplete dominance.

(3) codominance.

(3) epistasis

 

Subtopic:  Dominance Deviation from Mendel: 2 |
 89%
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For how many years Gregor Mendel conducted hybridisation experiments on garden peas?

(1) 5

(2) 7

(3) 14

(4) 34

Subtopic:  Introduction to Genetics: 2 |
 94%
From NCERT
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James Watson and Francis Crick got Nobel prize in the year

(1) 1960

(2) 1962

(3) 1959

(4) 1953

Subtopic:  DNA Double Helix |
 55%
From NCERT
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How many true breeding pea plant varieties had been selected by Mendel?

(1) 1

(2) 7

(3) 14

(4) 16

Subtopic:  Introduction to Genetics: 2 |
 75%
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A true-breeding plant line can be obtained by

(1) Cross pollination

(2) Self pollination

(3) Continuous Cross pollination

(4) Continuous Self pollination

Subtopic:  Monohybrid Cross: 1 |
 73%
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How many pairs of contrasting traits studied by Mendel were related to pod?

(1) 1

(2) 2

(3) 3

(4) 4

Subtopic:  Introduction to Genetics: 1 |
 85%
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Among the given pea plant traits identify the odd one

(1) Violet flower

(2) Yellow seed

(3) Yellow pod

(4) Axial flower position

Subtopic:  Introduction to Genetics: 1 |
 83%
From NCERT
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