Principles of Inheritance and Variation Test

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Principles of Inheritance and Variation Test - 1

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Question 1
1 / -0

Material used for conducting experiments on genetic traits by Mendel was

A
Pisumsativum

B
Lathyrusodaratus

C
Mirabilis jalappa

D
Oryza sativa

Solution

Mendel conduct his hybridization experiment on garden pea (Pisumsativum) using different contrasting pair of traits.
Question 2
1 / -0

Loss of one chromosome from one set is called

A
tetrasomy

B
nullisomy

C
monosomy

D
trisomy
Question 3
1 / -0

Assertion (A): In Klinefelter's syndrome, the chromosomal constitution of man is 22AA + XXY.
Reasoning (R): Few men have XX karyotype and yet are males. This is a rare phenomenon due to translocation of a small segment of Y chromosome attached to an X chromosome and is inherited in concert with X. Choose the correct option for the above statements.

A
Both Assertion and Reasoning are true and R is the correct explanation of A.

B
Both Assertion and Reasoning are true and R is not the correct explanation of A.

C
A is true and R is false.

D
Both A and R are false.
Question 4
1 / -0

In which of the following crosses will the progenies obtained be fifty percent homozygous recessive and fifty percent heterozygous?

A
TT x Tt

B
Tt x Tt

C
Tt x tt

D
TT x tt
Question 5
1 / -0

The addition or deletion of one or more chromosomes in a set is called

A
euploidy

B
aneuploidy

C
polyploidy

D
heteroploidy
Question 6
1 / -0

Monohybrid ratio is

A
3:1

B
9:1

C
9:3:3:1

D
9:3:1

Solution

Monohybrid ratio is the ratio of different phenotypic traits obtained on hybridizing single pair of trait. It is 3:1. When tall pea plant is crossed with dwarf, the offspring obtained are in 3/4 tall and 1/4 dwarf.
Question 7
1 / -0

What would a gene be called if it is inherited by both males and females, but expressed differently in the phenotype of a boy and a girl?

A
Unstable

B
Sex-controlled

C
Recessive

D
Structural
Question 8
1 / -0

The innate tendency of offspring to resemble their parents is called

A
Resemblance

B
Heredity

C
Inheritance

D
Variation

Solution

The innate tendency of offspring to resemble their parents is called heredity. The offspring resembles to parent due to same genetic combination inherited from parents.
Question 9
1 / -0

A Barr body is present in a male child. The syndrome most likely to occur is

A
Klinefelter's syndrome

B
Down's syndrome

C
Turner's syndrome

D
Edward's syndrome
Question 10
1 / -0

Chiasmata formation in Drosophila

A
generally takes place in males and females

B
takes place only in males

C
never or rarely takes place in males

D
never or rarely take place in females

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Principles of Inheritance and Variation Test - 1

Result

Principles of Inheritance and Variation Test - 1

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SHARING IS CARING

Question 1

Pisumsativum

Lathyrusodaratus

Mirabilis jalappa

Oryza sativa

Solution

Question 2

tetrasomy

nullisomy

monosomy

trisomy

Question 3

Both Assertion and Reasoning are true and R is the correct explanation of A.

Both Assertion and Reasoning are true and R is not the correct explanation of A.

A is true and R is false.

Both A and R are false.

Question 4

TT x Tt

Tt x Tt

Tt x tt

TT x tt

Question 5

euploidy

aneuploidy

polyploidy

heteroploidy

Question 6

3:1

9:1

9:3:3:1

9:3:1

Solution

Question 7

Unstable

Sex-controlled

Recessive

Structural

Question 8

Resemblance

Heredity

Inheritance

Variation

Solution

Question 9

Klinefelter's syndrome

Down's syndrome

Turner's syndrome

Edward's syndrome

Question 10

generally takes place in males and females

takes place only in males

never or rarely takes place in males

never or rarely take place in females

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