Generally the mutations are:
A.Dominant
B.Recessive
C.Useful
D.Harmful
Category: Variations and Mutations Mcqs
Hereditary variations can be produced in plants by using:
A.Auxins
B.X-ray
C.Gibberellic Acid
D.DDT
Change in gene pattern bringing about variations may be due to:
A.Random distribution of homologous genes in meiosis
B.Phenomenon of crossing over
C.Random union of gametes in fertilization
D.All of these
Ancon sheep of Sethwright’s Farm in Massachusetts (America) is example of:
A.Somatogenic variation
B.Substantive discontinuous variation
C.Continuous variation
D.All of these
Who considered variations as characters acquired by the organisms during their life-time:
A.Darwin
B.De Vries
C.Dodson
D.Lamarck
Which of the following is not an example of somatogenic variation:
A.Pierced nose and ear of subcontinental women
B.Well developed muscular right arm of blacksmith
C.Dancing talent in parents
D.Birth of monstrous babies in progenies of people of Hiroshima and Nagaski
Discontinuous variations are:
A.Mutations
B.Acquired characters
C.Essential features
D.Non-essential features
During gametogenesis when one or more pieces of chromosome may reunite at wrong sites is called:
A.Inversion
B.Duplication
C.Deletion
D.None of these
The mutations are mainly responsible for:
A.Variations in the organisms
B.Constancy in the organisms
C.Genetic continuity between individual and offsprings
D.Increasing population rate
In which of the following conditions of gene, the pregnancy of mutant gene is expected to increase in a population:
A.Dominance
B.Recessiveness
C.Both (a) & (b)
D.None of these
