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Free download in PDF Heredity and Evolution Multiple Choice Questions and Answers for competitive exams. These short objective type questions with answers are very important for Board exams as well as competitive exams like NEET, AIIMS, Genetics etc. These short solved questions or quizzes are provided by Gkseries.
(1)
Exchange of genetic material takes place in
[A]
Vegetative reproduction
[B]
Asexual reproduction
[C]
Sexual reproduction
[D]
Budding
Answer: Sexual reproduction
(2)
A cross between a tall plant (TT) and short pea plant (tt) resulted in progeny that were all tall plants because
[A]
Tallness is the dominant trait
[B]
Shortness is the dominant trait
[C]
Tallness is the recessive trait
[D]
Height of pea plant is not governed by gene 'T' or 't'
Answer: Tallness is the dominant trait
(3)
Which of the following statement is incorrect?
[A]
For every hormone there is a gene
[B]
For every protein there is a gene
[C]
For production of every enzyme there is a gene
[D]
For every molecule of fat there is a gene
Answer: For every molecule of fat there is a gene
(4)
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
Answer: The Y-chromosome in zygote
(5)
Select the incorrect statement
[A]
Frequency of certain genes in a population change over several generations resulting in evolution
[B]
Reduction in weight of the organism due to starvation is genetically controlled
[C]
Low weight parents can have heavy weight progeny
[D]
Traits which are not inherited over generations do not cause evolution
Answer: Reduction in weight of the organism due to starvation is genetically controlled
(6)
A basket of vegetables contains carrot, potato, radish and tomato. Which of them represent the correct homologous structures?
[A]
Carrot and potato
[B]
Carrot and tomato
[C]
Radish and carrot
[D]
Radish and potato
Answer: Radish and carrot
(7)
Select the correct statement
[A]
Tendril of a pea plant and phylloclade of Opuntia are homologous
[B]
Tendril of a pea plant and phylloclade of Opuntia are analogous
[C]
Wings of birds and limbs of lizards are analogous
[D]
Wings of bird and wings of bat are homologous
Answer: Wings of bird and wings of bat are homologous
(8)
A trait in an organism is influenced by
[A]
Paternal DNA only
[B]
Maternal DNA only
[C]
Both maternal and paternal DNA
[D]
Neither by paternal nor by maternal DNA
Answer: Both maternal and paternal DNA
(9)
According to the evolutionary theory, formation of a new species is generally due to
[A]
Sudden creation by nature
[B]
Accumulation of variations over several generations
[C]
Clones formed during asexual reproduction
[D]
Movement of individuals from one habitat to another
Answer: Accumulation of variations over several generations
(10)
From the list given below, select the character which can be acquired but not inherited
[A]
Colour of eye
[B]
Colour of skin
[C]
Size of body
[D]
Nature of hair
(11)
In peas, a pure tall plant (TT) is crossed with a short plant (tt). The ratio of pure tall plants to short plants in F2 is
[A]
1 : 3
[B]
3 : 1
[C]
1 : 1
[D]
2:1
(12)
The theory of evolution of species by natural selection was given by
[A]
Mendel
[B]
Darwin
[C]
Morgan
[D]
Lamarck
(13)
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]
Birds have evolved from reptiles
[D]
None of the above
Answer: Birds have evolved from reptiles
(14)
Which of the following best expresses the concept of the word ‘allele’?
[A]
Genes for wrinkled and yellow
[B]
Genes for wrinkled and round
[C]
phenotypes
[D]
the expression of agene
Answer: Genes for wrinkled and round
(15)
The inheritance of skin colour in humans is an example of which of the following?
[A]
Epistasis
[B]
Gene linkage
[C]
polygeneic inheritance
[D]
codominance
Answer: polygeneic inheritance
(16)
Which of the following gives information about the phenotype but not the genotype?
[A]
XHY
[B]
Hemophiliac man
[C]
Tall pea plant
[D]
None of the above
(17)
An example of a genotype is:
[A]
A tall pea plant
[B]
R and r
[C]
TtHH
[D]
Hemophiliac
(18)
A pedigree chart shows:
[A]
The genotypic ratios of the offspring
[B]
The types of gametes produced by the parents
[C]
The pattern of inheritance of a specific gene
[D]
Which genes are co-dominant
Answer: The pattern of inheritance of a specific gene
(19)
Mendel discovered principles of inheritance because he:
[A]
Observed simultaneously all of the many characteristics in which the parents differed
[B]
Believed that the hereditary characteristics of two individuals became thoroughly blended in
the offspring
[C]
Ignored all characteristics except a few markedly contrasting ones in which he studied
[D]
Studied only the offspring obtained from a single mating
Answer: Ignored all characteristics except a few markedly contrasting ones in which he studied
(20)
An example of alleles is:
[A]
AB and Tt
[B]
TT and Tt
[C]
T and t
[D]
X and Y
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