19. Assertion and reasoning in structure of chromosome, DNA and gene

In the given exercise, an Assertion is followed by the corresponding Reason. Choose the correct answer from the given options:

1.

Assertion:	Nucleus has the genetic material in it.
Reason:	Chromosomes are present inside the nucleus.

Both assertion and reason are correct and reason is the correct explanation of assertion.
Both assertion and reason are correct, but reason is not the correct explanation of assertion.
Assertion is correct but reason is false.
Assertion is false, but reason is correct

2.

Assertion:	The sugar-phosphate units that make up the backbone of DNA.
Reason:	Purine and pyrimidine, which are joined together by nitrogen bonds.

Both assertion and reason are correct and reason is the correct explanation of assertion.
Both assertion and reason are correct, but reason is not the correct explanation of Assertion.
Assertion is correct but reason is false.
Assertion is false, but reason is correct.

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