If opposite alleles come together, one of these only expresses while masking the other. It can be described as:
A.Law of independent assortment
B.Law of dominance
C.Law of segregation
D.Law of inheritance
Category: Basic Genetics Mcqs
Which of these is a recessive trait in Drosophila (fruit fly):
A.Red eye colour
B.White eye colour
C.Both (a) & (b)
D.None of these
Who gave laws of segregation and dominance?
A.Mendel
B.Morgan
C.Malpighi
D.Muller
Skin colour inheritance in mammals is usually:
A.Monogenic
B.Multiple allelism
C.Polygenic
D.Pseudoallelism
Gregor John Mendel is famous for:
A.Mutation teory
B.Laws of heredity
C.Discovery of genes
D.Inheritance of acquired characters
Phenotypic ration of F2 hybrids in cross between tall (TT) and dwarf (tt) plants is 3 Tall : 1 dwarf but genotypic ration will be:
A.1 TT : 2Tt : 1tt
B.2 TT : 2 tt
C.1 TT : 1 Tt : 2 tt
D.None of these
Allelic gene interaction is exhibited by which of these:
A.Incomplete dominance
B.Codominance
C.Lethal genes
D.All of these
When two pea plants with white flowers were crossed, F1 hybrids produced purple colour unlike their parents but like their remote ancestors, this is an example of:
A.Supplementary genes
B.Complementary genes
C.Lethal genes
D.Atavism
Visible characters in an organism are called:
A.Genotype
B.Phenotype
C.Homozygous
D.Heterozygous
Ratio of 9:3:4 is obtained instead of 9:3:3:1 under the condition when there is gene interaction involving:
A.Supplementary genes
B.Complementary genes
C.Both (a) & (b)
D.None of these
