NEET > Genetics and Evolution

Explore popular questions from Genetics and Evolution for NEET. This collection covers Genetics and Evolution previous year NEET questions hand picked by popular teachers.


Q 1.    

Correct4

Incorrect-1

Genetic drift operates in

small isolated population

B

large isolated population

C

non-reproductive population

D

slow reproductive population.

Explanation


Q 2.    

Correct4

Incorrect-1

In Hardy-Weinberg equation, the frequency of heterozygous individual is represented by

A

{tex} p ^ { 2 } {/tex}

{tex}2 p q {/tex}

C

{tex} p q {/tex}

D

{tex} q ^ { 2 } {/tex}.

Explanation


Q 3.    

Correct4

Incorrect-1

The chronological order of human evolution from early to the recent is

A

{tex}Australopithecus \rightarrow Ramapithecus \rightarrow Homo \ habilis \rightarrow Homo \ erectus{/tex}

{tex}Ramapithecus \rightarrow Australopithecus \rightarrow Homo \ habilis \rightarrow Homo \ erectus{/tex}

C

{tex}Ramapithecus \rightarrow Homo \ habilis \rightarrow Australopithecus \rightarrow Homo \ erectus{/tex}

D

{tex}Australopithecus \rightarrow Homo \ habilis \rightarrow Ramapithecus \rightarrow Homo \ erectus{/tex}

Explanation

Q 4.    

Correct4

Incorrect-1

Which of the following is the correct sequence of events in the origin of life{tex}?{/tex}
I. Formation of protobionts
II. Synthesis of organic monomers
III. Synthesis of organic polymers
IV. Formation of {tex}\mathrm{DNA}{/tex}-based genetic systems

A

{tex} \mathrm { I } , \mathrm { II} , \mathrm { III } , \mathrm { IV } {/tex}

B

{tex} \mathrm { I } , \mathrm { III } , \mathrm { II } , \mathrm { IV } {/tex}

{tex} \mathrm { II } , \mathrm { III } , \mathrm { I } , \mathrm { IV } {/tex}

D

{tex} \mathrm { II } , \mathrm { III } , \mathrm { IV } , \mathrm { I } {/tex}

Explanation

Q 5.    

Correct4

Incorrect-1

Which of the following structures is homologus to the wing of a bird{tex}?{/tex}

A

Hindlimb of rabbit

Flipper of whale

C

Dorsal fin of a shark

D

Wing of a moth

Explanation


Q 6.    

Correct4

Incorrect-1

Analogous structures are a result of

A

shared ancestry

B

stabilising selection

C

divergent evolution

convergent evolution.

Explanation


Q 7.    

Correct4

Incorrect-1

Following are the two statements regarding the origin of life.
(A)The earliest organisms that appeared on the earth were non-green and presumably anaerobes.
(B) The first autotrophic organisms were the chemoautotrophs that never released oxygen.

Of the above statements which one of the following options is correct {tex}?{/tex}

Both (A) and (B) are correct.

B

Both (A) and (B) are false.

C

(A) is correct but (B) is false.

D

(B) is correct but (A) is false.

Explanation

Q 8.    

Correct4

Incorrect-1

The wings of a bird and the wings of an insect are

A

phylogenetic structure and represent divergent evolution

B

homologous structures and represent convergent evolution

C

homologous structures and represent divergent evolution

analogous structures and represent convergent evolution.

Explanation


Q 9.    

Correct4

Incorrect-1

Industrial melanism is an example of

A

mutation

B

Neo-Lamarckism

C

Neo-Darwinism

natural selection.

Explanation



Q 10.    

Correct4

Incorrect-1

A population will not exist in Hardy-Weinberg equilibrium if

A

there is no migration

B

the population is large

individuals mate selectively

D

there are no mutations.

Explanation


Q 11.    

Correct4

Incorrect-1

Which is the most common mechanism of genetic variation in the population of a sexually reproducing organism{tex}?{/tex}

A

Genetic drift

Recombination

C

Transduction

D

Chromosomal aberrations

Explanation


Q 12.    

Correct4

Incorrect-1

Which of the following had the smallest brain capacity{tex}?{/tex}

A

{tex}Homo \, neanderthalensis{/tex}

{tex}Homo \, habilis {/tex}

C

{tex}Homo \, erectus{/tex}

D

{tex}Homo \, sapiens{/tex}

Explanation


Q 13.    

Correct4

Incorrect-1

In a population of 1000 individuals 360 belong to genotype AA, 480 to Aa and the remaining 160 to aa. Based on this data, the frequency of allele {tex}\mathrm A {/tex} in the population is

A

0.4

B

0.5

0.6

D

0.7

Explanation


Q 14.    

Correct4

Incorrect-1

Forelimbs of cat, lizard used in walking; forelimbs of whale used in swimming and forelimbs of bats used in flying are an example of

A

analogous organs

B

adaptive radiation

homologous organs

D

convergent evolution.

Explanation


Q 15.    

Correct4

Incorrect-1

Which one of the following are analogous structures{tex}?{/tex}

Wings of bat and wings of pigeon

B

Thorns of {tex} Bougainvillea{/tex} and tendrils of {tex}Cucurbita{/tex}

C

Flippers of dolphin and legs of horse

D

None of the above

Explanation



Q 16.    

Correct4

Incorrect-1

According to Darwin, the organic evolution is due to

A

competition within closely related species

B

reduced feeding efficiency in one species due to the presence of interfering species

intraspecific competition

D

interspecific competition.

Explanation


Q 17.    

Correct4

Incorrect-1

The tendency of population to remain in genetic equilibrium may be disturbed by

A

lack of mutations

lack of random mating

C

random mating

D

lack of migration.

Explanation


Q 18.    

Correct4

Incorrect-1

Variation in gene frequencies within populations can occur by chance rather than by natural selection. This is referred to as

A

random mating

B

genetic load

C

genetic flow

genetic drift.

Explanation


Q 19.    

Correct4

Incorrect-1

The eye of octopus and eye of cat show different patterns of structure, yet they perform similar function. This is an example of

analogous organs that have evolved due to convergent evolution.

B

analogous organs that have evolved due to divergent evolution.

C

homologous organs that have evolved due to convergent evolution.

D

homologous organs that have evolved due to divergent evolution.

Explanation

Q 20.    

Correct4

Incorrect-1

Random unidirectional change in allele frequencies that occurs by chance in all populations and especially in small populations is known as

A

migration

B

natural selection

genetic drift

D

mutation.

Explanation


Q 21.    

Correct4

Incorrect-1

Genetic variation in a population arises due to

A

recombination only

mutation as well as recombination

C

reproductive isolation and selection

D

mutations only.

Explanation



Q 22.    

Correct4

Incorrect-1

Dinosaurs dominated the world in which of the following geological eras {tex}?{/tex}

A

Cenozoic

Jurassic

C

Mesozoic

D

Devonian

Explanation


Q 23.    

Correct4

Incorrect-1

The finch species of Galapagos islands are grouped according to their food sources. Which of the following is not a finch food {tex}?{/tex}

Carrion

B

Insects

C

Tree buds

D

Seeds

Explanation


Q 24.    

Correct4

Incorrect-1

Evolution of different species in a given area starting from a point and spreading to other geographical areas is known as

adaptive radiation

B

natural selection

C

migration

D

divergent evolution.

Explanation


Q 25.    

Correct4

Incorrect-1

Which one of the following options gives one correct example each of convergent evolution and divergent evolution{tex}?{/tex}

{tex} \begin{array} { l l } { \text { Convergent } } &&&& { \text { Divergent } } \\ { \text { evolution } } &&&& { \text { evolution } } \\ \\ { \text { Eyes of octopus } } &&&& { \text { Bones of forelimbs } } \\ { } &&&& { \text { of mammals and } } \\ { } &&&& { \text { vertebrates } } \end{array} {/tex}

B

{tex} \begin{array} { l l } { \text { Thorns of \ Bougainvillea } } &&& { \text { Wings of} }\\ { \text { and tendrils of } } &&& { \text { butterflies } } \\ { \text \ { Cucurbita } } &&& { \text { and bird } } \end{array} {/tex}

C

{tex} \begin{array} { l l } { \text { Bones of forelimbs } } &&& { \text { Wings of butterfly } } \\ { \text { of vertebrates } } &&& { \text { and birds } } \end{array} {/tex}

D

{tex} \begin{array} { l l } { \text { Thorns of \ Bougainvillea } } &&& { \text { Eyes of ectopus} }\\ { \text { and tendrils of } } &&& { \text { and mammals} } \\ { \text \ { Cucurbita } } \end{array} {/tex}

Explanation