Principles of Inheritance and Variation Test

Result

Principles of Inheritance and Variation Test - 3

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Weekly Quiz Competition

Question 1
1 / -0

Assertion (A): The linked genes tend to get inherited together.

Reason (R): The bond between them fails to break.

A
A is correct and R is explanation to A

B
A is correct and R is not an explanation to A

C
A is true and R is wrong

D
A is wrong and R is true

Solution

When two genes are close together on the same chromosome, they do not assort independently and are said to be linked. They tend to get inherited together. They are tightly bonded to fail break.
Question 2
1 / -0

Mendel selected Pisum sativum for hybridisation experiments because of

A
Long life span and non-fertile hybrids

B
Clear contrasting characters and short lifespan

C
Infertile hybrids and production of large number of seeds by each plant

D
Presence of unisexual flowers

Solution

Pisum Sativum was selected because it shows clear contrasting characters and has a short lifespan to observe those characteristics.
Question 3
1 / -0

Which blood group genotype is homozygous dominant?

A
I^A I^O

B
I^A I^B

C
I^B I^B

D
I^O I^O

Solution

Genotypes I^BI^B and I^OI^O both are homozygous, out of which, I^BI^B is homozygous dominant, while I^OI^O is homozygous recessive. Genotypes I^AI^O and I^AI^B both are heterozygous.
Question 4
1 / -0

Incomplete dominance is shown by :

A
Primrose

B
Mirabilis

C
Helianthus

D
China rose

Solution

Incomplete dominance is found in 4 O'clock plant (Mirabilis jalapa).