Deviation from Mendelian Genetic Principles MCQs

Welcome to our comprehensive collection of Multiple Choice Questions (MCQs) on Deviation from Mendelian Genetic Principles, a fundamental topic in the field of Cytogenetics. Whether you're preparing for competitive exams, honing your problem-solving skills, or simply looking to enhance your abilities in this field, our Deviation from Mendelian Genetic Principles MCQs are designed to help you grasp the core concepts and excel in solving problems.

In this section, you'll find a wide range of Deviation from Mendelian Genetic Principles mcq questions that explore various aspects of Deviation from Mendelian Genetic Principles problems. Each MCQ is crafted to challenge your understanding of Deviation from Mendelian Genetic Principles principles, enabling you to refine your problem-solving techniques. Whether you're a student aiming to ace Cytogenetics tests, a job seeker preparing for interviews, or someone simply interested in sharpening their skills, our Deviation from Mendelian Genetic Principles MCQs are your pathway to success in mastering this essential Cytogenetics topic.

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Deviation from Mendelian Genetic Principles MCQs | Page 6 of 8

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Q51.
Epistasis can produce a ratio of 12:3:1.

a.

True

b.

False

c.

May be True or False

d.

Can't say

Discuss
Answer: (a).True
Q52.
In case of dominant epistasis which of the following will have the same expression, when A is the epistatic locus?

a.

A/a B/b and a/a B/b

b.

A/A b/b and A/A B/b

c.

a/a b/b and A/a b/b

d.

a/a b/b and a/a B/B

Discuss
Answer: (b).A/A b/b and A/A B/b
Q53.
Dominant epistasis ratio with A as epistatic gene 12:3:1 corresponds to ________________

a.

A/- B/- : A/- b/b : a/a B/-

b.

a/a B/- : a/a b/b : a/a b/-

c.

A/A B/-: A/- B/-: a/a b/b

d.

A/- -/- : a/a B/-: a/a b/b

Discuss
Answer: (d).A/- -/- : a/a B/-: a/a b/b
Q54.
Which one of the following is not the case of epistasis?

a.

Fur colour in mouse

b.

Fruit colour in summer squash

c.

Fruit shape in summer squash

d.

Coat colour in labrador

Discuss
Answer: (c).Fruit shape in summer squash
Q55.
Which of the following is incorrect about the graying of coat colour of horse?

a.

The graying is a case of dominant epistasis

b.

The colour of the fur and skin gradually turns grey

c.

The G/G or G/g shows greying

d.

Coat colour of horse with G/- combination will grey irrespective of what was its colour to start with

Discuss
Answer: (b).The colour of the fur and skin gradually turns grey
Q56.
In case of summer squash, the W locus shows dominant epistasis over the Y locus. W locus develop white colour while /- give yellow and y/y gives green. If you cross a yellow and a green summer squash you can’t get______________

a.

Yellow

b.

Green

c.

White

d.

You can get all

Discuss
Answer: (c).White
Q57.
In case of summer squash which of the following is not right.

a.

The W allele produces a White substance

b.

A white substance is converted to Yellow when dominant Y allele is present

c.

The transformation of white substance to yellow is via green intermediate

d.

The green intermediate has combination at the Y locus y/y

Discuss
Answer: (a).The W allele produces a White substance
Q58.
Flower colour in sweet pea shows duplicate epistasis, if purple colour is dominant what is the F2 ratio?

a.

15:1

b.

9:7

c.

3:1

d.

9:3:4

Discuss
Answer: (b).9:7
Q59.
Which of the following condition in recessive duplicate epistasis will give the odd phenotype?

a.

A/- B/-

b.

A/- b/b

c.

a/a B/-

d.

a/a b/b

Discuss
Answer: (a).A/- B/-
Q60.
If you cross two different strains of white flower you may get a purple flower in a sweet pea plant.

a.

True

b.

False

c.

May be True or False

d.

Can't say

Discuss
Answer: (a).True
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