The random changes in the allele frequency occurring by chance is termed as

1. genetic variability

2. genetic drift

3. gene migration

4. mutation

Subtopic:  Sources of Variation: 2 | Sources of Variation |
 81%
From NCERT
To view explanation, please take trial in the course.
NEET 2025 - Target Batch
Hints
To view explanation, please take trial in the course.
NEET 2025 - Target Batch

The first living organisms that appeard on the planet, according to the most accepted

view, were

1. anaerobic

2. aerobic

3. photosynthetic

4. none of the above

Subtopic:  Origin of Life: Chemical Evolution: 1 | Origin of Life |
 87%
To view explanation, please take trial in the course.
NEET 2025 - Target Batch
Hints

Which of these are considered most essential in the origin of life?

1. Enzymes

2. Nucleic acids

3. Carbohydrates

4. Proteins

Subtopic:  Origin of Life: Chemical Evolution: 1 | Origin of Life: Chemical Evolution: 2 | Origin of Life |
 72%
AIIMS - 2001
To view explanation, please take trial in the course.
NEET 2025 - Target Batch
Hints

advertisementadvertisement

Genetic drift operates only in

1. island population 

2. smaller population 

3. larger population

4. none of these.

Subtopic:  Sources of Variation: 2 | Sources of Variation |
 83%
AIIMS - 2001
To view explanation, please take trial in the course.
NEET 2025 - Target Batch
Hints

The cranial capacity was largest among the 

(a) Peking man               (b) Java ape man

(b) African man              (d) Neanderthal man

Subtopic:  Evolution of Homo Sapiens |
 83%
AIIMS - 2002
To view explanation, please take trial in the course.
NEET 2025 - Target Batch
Hints

The early-stage human embryo distinctly possesses

1. gills                             

2. gill slits

3. external ear (pinna)       

4. eyebrows                             

Subtopic:  Embryological Evidence of Evolution |
 84%
From NCERT
AIIMS - 2003
To view explanation, please take trial in the course.
NEET 2025 - Target Batch
Hints
To view explanation, please take trial in the course.
NEET 2025 - Target Batch

advertisementadvertisement

A baby has been born with a small tail. It is a case exhibiting

1. retrogressive evolution

2. mutation 

3. atavism

4. metamorphosis.

Subtopic:  Concept of Organic Evolution: Evidence: 3 | Concept of Organic Evolution: Evidence |
 70%
AIIMS - 2004
To view explanation, please take trial in the course.
NEET 2025 - Target Batch
Hints

Potato and sweet potato 

(1) have edible parts which are homologous organs

(2) have edible parts which are analogous organs

(3) have been introduced in India from the same place

(4) are two species of the same genus.

 86%
From NCERT
AIIMS - 2004
To view explanation, please take trial in the course.
NEET 2025 - Target Batch
Hints
To view explanation, please take trial in the course.
NEET 2025 - Target Batch

"Homo sapiens" implies

(1) Human race

(2) Human beings

(3) Modern man

(4) None of these

Subtopic:  Evolution of Homo Sapiens |
AIIMS - 2007
To view explanation, please take trial in the course.
NEET 2025 - Target Batch
Hints

advertisementadvertisement

Wings of pigeon, mosquito and bat show

1. divergent evolution 

2. atavism

3. convergent evolution 

4. all of these 

 84%
AIIMS - 2007
To view explanation, please take trial in the course.
NEET 2025 - Target Batch
Hints