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Evolution MCQs for NEET — Zoology Questions with Answers

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Fitness is not

A. Something for which nature selects B. End result of the ability to adapt and get selected by nature C. Based on characteristics which are inherited D. Considered when cellular forms of life were originated.

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Explanation

NCERT page number 134

7.5 Biological Evolution, Para 2

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Two peaks will be observed in which of the operation of natural selection?

A. Disruptive B. Directional C. Stabilising D. Both A and B

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Explanation

NCERT page number 136

Figure 7.8 ©

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Peak getting higher and narrower is observed in which of the operation of natural selection?

A. Disruptive B. Directional C. Stabilising D. Both A and B

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Explanation

NCERT page number 136

Figure 7.8 (a)

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What will be the frequency of homozygote dominant in a population of triploid organisms.

A. p×p×p B. AA C. p D. P

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Explanation

NCERT page number 137, para-1

7.7 Hardy-Weinberg Equilibrium

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If the population of a place has a certain character which is recessive in as many as 100 individuals. Find the value of q if total number of individuals are 1000

A. 0.1 B. 0.7 C. 0.3 D. 1

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Explanation

q2=100/1000

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If 900 people make a population such that 300 are albino. Calculate the frequency of carriers?

A. 42 B. 44 C. 48 D. 49

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Explanation

q2=300/900. Calculate q from there.

p+q=1 calculate p from there

Now carriers will be 2pq.

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If p=0.8 calculate q

A. 0.8 B. 0.2 C. 6.4 D. 0.4

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Explanation

p+q=1

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If a population has dominant phenotype in 1600 individuals out of 2000 then calculate the frequency of heterozygote.

A. 494 B. 256 C. 128 D. 356

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Explanation

dominant phenotype means 2pq+p2

Rest is same q2= 400/2000

p+q=1 calculate p from there

Now carriers will be 2pq.

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If in a given population number of individuals with dominant phenotype are 60% what will be the number of heterozygote in that population?

A. Around 23% B. Around 46% C. 26% D. 25%

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Explanation

dominant phenotype means 2pq+p2

Rest is same q2= 40/100

p+q=1 calculate p from there

Now carriers will be 2pq

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Zosterophyllum evolved from

A. Psilophyton B. Rhynia type plants C. Tracheophyte ancestors D. Chlorophyte ancestors

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Explanation

NCERT page number 138

Figure: 7.9 A sketch of the evolution...

7.8 A Brief Account Of Evolution

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