Biology
General
Easy
Question
The natural selection that acts against change in the form and keeps the population constant through the time is
- Directional
- Disruptive
- Not acting
- Stabilizing
The correct answer is: Stabilizing
Stabilizing selection acts in the absence of large scale environment change, therefore, it keeps a population genetically constant.
Related Questions to study
Biology
is also known as
is also known as
BiologyGeneral
Biology
Tendrils in plants are an example of
Tendrils in plants are an example of
BiologyGeneral
Biology
Hugo de Vries based on his work on …A… brought forth the idea of …B…, large difference arising suddenly in a population. He believed that it is mutation which causes evolution and not the …C… that Darwin talked about. Mutations are random and …D…, while Darwinian variations are small and …E…
Choose the correct option for A,B,C,D and E to complete the given statement
Hugo de Vries based on his work on …A… brought forth the idea of …B…, large difference arising suddenly in a population. He believed that it is mutation which causes evolution and not the …C… that Darwin talked about. Mutations are random and …D…, while Darwinian variations are small and …E…
Choose the correct option for A,B,C,D and E to complete the given statement
BiologyGeneral
Biology
Which of the following statements correctly defines the phenomenon of genetic drift?
I. Random change in gene allele frequency
II. Occur by chance
III. It is directional
IV. Causes elimination of certain alleles
V. Causes fixation of alleles
The correct combination is
Which of the following statements correctly defines the phenomenon of genetic drift?
I. Random change in gene allele frequency
II. Occur by chance
III. It is directional
IV. Causes elimination of certain alleles
V. Causes fixation of alleles
The correct combination is
BiologyGeneral
Biology
Which of the following statements regarding the evolution of plants and animals is/are correct?
I. Amphibians evolved into reptiles
II. Fish with stout and strong fins could move on land and go back to water. This was about 350 million years ago
III. Giants ferns fell to form wall deposits slowly
IV. About 65 million years ago dinosaurs died out
V. 
is the connection link between birds and reptiles
The correct combination is
Which of the following statements regarding the evolution of plants and animals is/are correct?
I. Amphibians evolved into reptiles
II. Fish with stout and strong fins could move on land and go back to water. This was about 350 million years ago
III. Giants ferns fell to form wall deposits slowly
IV. About 65 million years ago dinosaurs died out
V. is the connection link between birds and reptiles
The correct combination is
BiologyGeneral
Biology
The variation in the natural selection is on, it is due to the random mutations. What does this imply about the natural selection?
The variation in the natural selection is on, it is due to the random mutations. What does this imply about the natural selection?
BiologyGeneral
Biology
Two nucleotide sequences found in two different species are exactly the same. This suggests that these species
Two nucleotide sequences found in two different species are exactly the same. This suggests that these species
BiologyGeneral
Biology
Diagram given below indicates
Diagram given below indicates
BiologyGeneral
BiologyGeneral
Biology
Which of the following are the wrong statements
I. Organs which are different in basic structure and origin but performs similar functions are called analogous organ
II. Organs with different to basic structure and origin but perform similar functions are called homologous organs
III. Homologous organs lead to convergent evolution
IV. Analogous organ leads to divergent evolution
The correct combination is
Which of the following are the wrong statements
I. Organs which are different in basic structure and origin but performs similar functions are called analogous organ
II. Organs with different to basic structure and origin but perform similar functions are called homologous organs
III. Homologous organs lead to convergent evolution
IV. Analogous organ leads to divergent evolution
The correct combination is
BiologyGeneral
Biology
Atavism is found in
Atavism is found in
BiologyGeneral
Biology
Which was absent in the atmosphere at the time of origin of life?
Which was absent in the atmosphere at the time of origin of life?
BiologyGeneral
Biology
How might an evolutionary biologist explains why a species of birds has evolved a larger beak size?
How might an evolutionary biologist explains why a species of birds has evolved a larger beak size?
BiologyGeneral
Biology
Which of the following is an atavistic character?
I. Body hairs
II. Enlarged canines
III. Presence of six fingers
IV. Presence of tail in some babies
The correct combination is
Which of the following is an atavistic character?
I. Body hairs
II. Enlarged canines
III. Presence of six fingers
IV. Presence of tail in some babies
The correct combination is
BiologyGeneral
Biology
True statements regarding the genetic drift are
I. It mostly occurs in smaller population
II. Certain alleles can be lost forever because of genetic drift
III. Founder effects and bottle neck effects are caused by genetic drift
IV. Mutations are primarly responsible for genetic drift
The correct combination showing true statement is
True statements regarding the genetic drift are
I. It mostly occurs in smaller population
II. Certain alleles can be lost forever because of genetic drift
III. Founder effects and bottle neck effects are caused by genetic drift
IV. Mutations are primarly responsible for genetic drift
The correct combination showing true statement is
BiologyGeneral
Biology
The animal called evolved into the first amphibians that lived on both land and water.
Complete the given statement by choosing an appropriate option
The animal called evolved into the first amphibians that lived on both land and water.
Complete the given statement by choosing an appropriate option
BiologyGeneral
