What will be the phenotype of Rr when “R” completely masks the effect of “r”?
a) same like homozygous recessive (rr)
b) same like homozygous dominant (RR)
c) both a and b
d) none of them
The contrasting pair of alleles for all the seven characters chosen by Mendel showed……….
a) complete dominance
b) incomplete dominance
c) Co-dominance
d) over dominance
Which of the following example shows complete dominance?
a) height in garden pea
b) flower color in 4 O’clock plant
c) ABO blood group
d) drosophila eye pigment
When neither of the two alleles express independently in heterozygous condition, rather a blend of expression of both alleles is appeared is called……….
a) over dominance
b) incomplete dominance
c) Co-dominance
d) complete dominance
Who for the first time observed incomplete dominance in 4 O’clock flowering plant?
a) Alfred Wallace
b) Jean. B. De Lamarck
c) Gregor John Mendel
d) Carl Correns
Explanation: Carl Erich Correns was a German botanist and geneticist notable primarily for his independent discovery of the principles of heredity
When Carl Correns
crossed true breeding red flower plant (RR) with true breeding white flower
plant, what was the phenotype of F1?
a) half red half white
b) half red, one fourth white and one fourth pink
c) half white and one fourth red and one fourth pink
d) all were pink
Explanation: it was due to incomplete dominance
