MCQ on Genetics and Evolution. We covered all the MCQ on Genetics and Evolution in this post for free so that you can practice well for the exam.
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MCQ on Genetics and Evolution for Students
The fossil remains of Archaeopteryx is a connecting link between
(a) reptiles and mammals
(b) reptiles and bird
(c) fish and amphibian
(d) amphibian and reptile
Option b – reptiles and bird
The maleness of a child is determined by
(a) the X chromosome in the zygote
(b) the Y chromosome in zygote
(c) the cytoplasm of germ cell which determines the sex
(d) sex is determined by chance
Option b – the Y chromosome in zygote
Some dinosaurs had feathers although they could not fly but birds have feathers that help them to fly. In the context of evolution this means that
(a) reptiles have evolved from birds
(b) there is no evolutionary connection between reptiles and birds
(c) feathers are homologous structures in both the organisms
(d) birds have evolved from reptiles.
Option d – birds have evolved from reptiles
To study the natural phenomenon of inheritance, Mendel selected the pea plants. Which of the following properties were suitable for their studies? (i) Plants would easily self pollinate or cross-pollinate in nature. (ii) Plants were easily grown in garden soil with a considerably shorter generation time. (iii) Pea plants do not require the true-breeding for hybridisation experiments. (iv) Many parts of the plant such as pod, seed, flower, cotyledons showed distinct phenotypes.
(a) (i), (ii) and (iii)
(b) (ii) and (iv)
(c) (i) and (ii)
(d) (ii), (iii) and (iv).
Option b – (ii) and (iv)
What is the difference between genetic drift and change due to natural selection?
(a) Genetic drift does not require the presence of variation.
(b) Genetic drift never occurs in nature, natural selection does.
(c) Genetic drift does not involve competition between members of a species.
(d) There is no difference.
Option c – Genetic drift does not involve competition between members of a species
Which concept was not included in Charles Darwin’s theory of Natural Selection?
(a) Struggle for existence
(b) Punctuated equilibrium
(c) Survival of the fittest
(d) Overproduction of offspring.
Option b – Punctuated equilibrium
Natural selection is called ‘survival of the fittest’. Which of the following statements best describes an organism?
(a) How strong it is compared to other individuals of the same species.
(b) How much food and resources it is able to gather for its offspring.
(c) The ability to adapt to the environment in the niche it occupies.
(d) The number of fertiie offspring it has.
Option c – The ability to adapt to the environment in the niche it occupies
Human offspring’s sex is determined
(a) through father’s sex chromosomes.
(b) through mother’s sex chromosomes.
(c) by hormones.
(d) by enzymes.
Option a – through father’s sex chromosomes
Wild cabbage has evolved into new varieties like cabbage, broccoli and cauliflower by
(a) genetic drift
(b) natural selection
(c) reproductive isolation
(d) artificial selection.
Option d – artificial selection
The process by which new species develop from the existing species is known as
(a) Evolution
(b) Natural selection
(c) Artificial selection
(d) Speciation
Option d – Speciation
Which of the following is an example of genetic variation?
(a) One person has a scar, but his friend does not.
(b) One person is older than another.
(c) Reeta eats meat, but her sister Geeta is a vegetarian.
(d) Two children have different eye colours.
Option d – Two children have different eye colours
Differences between organisms in a species are described as variation. Which of the following would you describe as continuous variation?
(a) Hair colour
(b) Eye colour
(c) Weight
(d) Sex
Option c – Weight
The more characteristics two species have in common :
(a) More closely they are related and more recently they had a common ancestors.
(b) More distantly they are related and more recently they have common ancestors.
(c) More closely they are related and more distantly they have common ancestors.
(d) More distantly they are related and more distantly they have common ancestors.
Option a – More closely they are related and more recently they had a common ancestors
In humans if gene B gives brown eyes and gene b blue eyes, what will gives be the colour of eyes of the persons having combinations (i) Bb and (ii) BB?
(a) (i) Blue and (ii) Brown
(b) (i) Brown and (ii) Blue
(c) (i) Brown and (ii) Brown
(d) (i) Blue and (ii) Blue
Option c – (i) Brown and (ii) Brown
A cross between two individuals results in a ratio of 9 : 3 : 3 : 1 for four possible phenotypes of progeny. This is an example of a
(a) Monohybrid cross
(b) Dihybrid cross
(c) Test cross
(d) F1 generation
Option b – Dihybrid cross
Which of the following characters can be acquired but not inherited?
(a) Colour of skin
(b) Size of body
(c) Colour of eyes
(d) Texture of hair
Option b – Size of body
Those organs which have the same basic structure but different functions are called
(a) Vestigial organs
(b) Analogous organs
(c) Homologous organs
(d) None of these
Option c – Homologous organs
Those organs which have different basic structure but have similar appearance and perform similar functions are called
(a) Analogous organs
(b) Homologous organs
(c) Vestigial organs
(d) None of these
Option a – Analogous organs
The remaps (or impressions) of dead animals or plant? that lived in the remote past are known as
(a) extinct species
(b) fossils
(c) naturally selected species
(d) none of the above
Option b – fossils
We covered all the mcq on genetics and evolution above in this post for free so that you can practice well for the exam.
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