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Subjects
Science State Board
Class 10
Breeding and biotechnology
Methods of breeding and genetic engineering

28. Hybridization, plant and animal breeding

Exercise condition:

6 m.

Examine the statements below and choose the correct answer:

1.

Assertion (A):	rDNA is superior over hybridisation techniques.
Reasoning (R):	Desired genes are inserted without introducing the undesirable genes in target organisms.

A is false but R is true
Both A and R are true but R is NOT the correct explanation of A
A is true but R is false
Both A and R are true and R is the correct explanation of A
Both A and R are false

2.

Assertion (A):	Mutation is a process through which genetic variations are produced.
Reasoning (R):	Mutation is a change in the nucleotide sequence of DNA.

Both A and R are true but R is NOT the correct explanation of A
A is false but R is true
A is true but R is false
Both A and R are true and R is the correct explanation of A
Both A and R are false

3.

Assertion (A):	Animal breeding enhances food production.
Reasoning (R):	Animal husbandry improves the animal genotypes.

Both A and R are true but R is NOT the correct explanation of A
A is true but R is false
Both A and R are false
A is false but R is true
Both A and R are true and R is the correct explanation of A

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