Evolution

Natural selection can lead to $\_\_\_\_$ .
(a) stabilisation
(b) genetic drift
(c) directional change
(d) disruption
Choose the correct answer from the options given below :

Given below are two statements : one is labelled as Assertion A and the other is labelled as Reason $\mathbf{R}$.
Assertion A : Forelimbs of human and bats are homologous.
Reason R : Forelimbs of humans and bats have similar anatomical stru...

A population of diploid organisms is at Hardy-Weinberg equilibrium. If the frequency of allele $A$ is 0.1 , the frequency of AA is $\_\_\_\_$ .

Which of the following is not evidence for evolution?

Given below are two statements :
Statement I : Modern Homo sapiens arose in Australia and moved across continents.
Statement II: Homo sapiens arose around 75000 to 10000 years ago.
In the light of the above statements, choose the most appro...

Adaptive radiation in placental mammals and Australian Marsupials leading to similarity between distant species is an example of $\_\_\_\_$ .

Evolution of human appears parallel to the progressive development of brain and language skills. As such, the evolution of individual species in the sequence of their appearance is:

\(\text { Match List I with List II with respect to chronology of evolution of life forms }\)
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Which of the following is not an example of convergent evolution?

Sweet potato and potato represent a certain type of evolution. Select the correct combination of terms to explain the evolution.

Which evolutionary phenomenon is depicted by the sketch given in figure?

Match List I with List II:

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What is the correct order (old to recent) of periods in Paleozoic era?

Match List-I with List-II :

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Match List-I with List-II with respect to convergent evolution:

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Match List I with List II:

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The flippers of the Penguins and Dolphins are the example of the

Given below are some stages of human evolution.
Arrange them in correct sequence. (Past to Recent)
A. Homo habilis
B. Homo sapiens
C. Homo neanderthalensis
D. Homo erectus
Choose the correct sequence of human evolution from the options give...

Identify the fossil of man who showed the following
characteristics.
(A) Brain capacity of 1400 cc
(B) Used hides to protect their body
(C) Buried their dead bodies
In the light of above statements, choose the correct
answer from t...

Given below are two statements:
Statement I: RNA mutates at a faster rate.
Statement II: Viruses having RNA genome and shorter life span mutate and evolve faster.
In the light of the above statements, choose the correct answer from the opti...

Select the correct group/set of Australian Marsupials exhibiting adaptive radiation.

Select the correct statement regarding mutation theory of evolution.

Panspermia, an idea that is still a favourite for some astronomers, means:

Which of the following statements is not true?

Natural selection where more individuals acquire specific character value other than the mean character value, leads to

Match List-I with List-II.
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...

The factor that leads to Founder effect in a population is :

Flippers of Penguins and Dolphins are
examples of

From his experiments, S.L. Miller produced
amino acids by mixing the following in a
closed flask

Embryological support for evolution was
disapproved by

Which of the following refer to correct
example(s) of organisms which have evolved
due to changes in environment brought about
by anthropogenic action?
(a) Darwin’s Finches of Galapagos islands.
(b) Herbicide resistant weeds.
(c) Drug resis...

Variations caused by mutation, as proposed by Hugo de Vries, are :

In a species, the weight of newborn ranges from 2 to 5 kg. 97% of the newborn with an average weight
between 3 to 3.3 kg survive whereas 99% of the infants born with weights from 2 to 2.5 kg or 4.5 to 5kg die.
Which type of selection proces...

Match the hominids with their correct brain size :

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The similarity of bone structure in the forelimbs
of many vertebrates is an example of

According to Hugo de Vries, the mechanism of
evolution is

Among the following sets of examples for
divergent evolution, select the incorrect option.

Genetic drift operates in

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

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

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

Analogous structures are a result of :

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 o...

Which of the following structures is homologus to the wing of a bird ?

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

Which of the following had the smallest brain capacity ?

A population will not exist in Hardy-Weinberg equilibrium if

Industrial melanism is an example of -

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

Which one of the following are analogous structures?