Mule is an example of:
A.Heterosis
B.Hybrid vigour
C.Both (a) & (b)
D.None of these
Category: Basic Genetics Mcqs
The worker who studied experimentally and proposed the laws of heredity was:
A.Muller
B.Morgan
C.Maipighi
D.Mendel
Genes that reduce the viability of individual or cause its death of bearer are called:
A.Supplementary genes
B.Compementary genes
C.Lethal genes
D.None of these
In a dihybrid cross between round yellow and wrinkled green plants the F2 generation will have 16 individuals in the ration of:
A.9:3:3:1
B.9:03:04
C.9:3:1:3
D.9:07
Instead of usual mendelian ratio of 9:3:3:1 often ratio of 9:7 is obtained in some of the crosses which is possibly due to interaction of:
A.Complementary genes
B.Supplementary genes
C.Modifier genes
D.None of these
When red and white cattles are crossed, they produce a roan offspring which has both red and white hairs on skin, it is called:
A.Incomplete dominance
B.Codominance
C.Atavism
D.None of these
Who formulated chromosomal theory of inheritance:
A.Sutton
B.Morgan
C.Bateson
D.Johannsen
Ratio of 27:9:9:9:3:3:1 in F2 individuals is suggestive of:
A.Monohybrid cross
B.Dihybrid cross
C.Trihybrid cross
D.None of these
Which will be the correct genotypes of F2 plants obtained by cross between tall (TT) and dwarf (tt) parents:
A.TT : tt : Tt : tt
B.TT : Tt : tt
C.2 TT : 2 tt
D.None of these
