Biology-Genetics and Evolution [NSO Level 1- Science Olympiad (SOF) Class 12]: Questions 1 - 3 of 15

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Question number: 1

» Biology » Genetics and Evolution

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Assertion-Reason▾

Question

Assertion (Ꭺ)

In eukaryotic cells, RNA which is produced during transcription cannot be directly used for translation.

Reason (Ꭱ)

Phenomenon of RNA splicing helps to remove exons.

Choices

Choice (4)Response

a.

Both Ꭺ and Ꭱ are true but Ꭱ is NOT the correct explanation of Ꭺ

b.

Ꭺ is false but Ꭱ is true

c.

Both Ꭺ and Ꭱ are true and Ꭱ is the correct explanation of Ꭺ

d.

Ꭺ is true but Ꭱ is false

Question number: 2

» Biology » Genetics and Evolution

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MCQ▾

Question

If there are few or no intermediate forms in fossil record, no morphological change occurred for long periods and new forms arose very fast, then how would be the evolution of these new forms described as?

Choices

Choice (4)Response

a.

Convergent evolution

b.

Gradualism

c.

Punctuated equilibrium

d.

Adaptive evolution

Question number: 3

» Biology » Genetics and Evolution

Edit
MCQ▾

Question

There is a rare human genetic disease called Maple syrup urine disease that runs in families. Babies who are affected by this disease have urine odor like maple syrup and it occurs because of metabolic disorder. The babies die at an early age if not treated. The parents are never affected with these symptoms but, the child got the disease. What type of gene is it if the disease is caused by a single gene?

Choices

Choice (4)Response

a.

Recessive

b.

Sex linked dominant

c.

X – linked Dominant

d.

Dominant

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