Heredity and Variation(Mendelian Inheritance; Deviations from Mendelism Incomplete dominance, Co-dominance, Multiple alleles and Inheritance of blood groups, Pleiotropy...)
Heredity and Variation(Mendelian Inheritance; Deviations from Mendelism Incomplete dominance, Co-dominance, Multiple alleles and Inheritance of blood groups, Pleiotropy...) MCQ Questions
13.
Incomplete dominance is best illustrated by:
A.
ABO blood group system in humans
B.
Pink flower colour in Mirabilis jalapa (4 o'clock plant)
D.
Eye colour in Drosophila
ANSWER :
B. Pink flower colour in Mirabilis jalapa (4 o'clock plant)
14.
In incomplete dominance, the F2 phenotypic ratio is:
15.
In Antirrhinum majus (snapdragon), the cross between red (RR) and white (rr) flowers produces F1 with:
D.
Red and white spotted flowers
16.
Co-dominance is exhibited by:
A.
ABO blood group system in humans
B.
Sickle cell trait expression
C.
Snapdragon flower colour
ANSWER :
A. ABO blood group system in humans
17.
In co-dominance, the heterozygote shows:
A.
Only the dominant phenotype
B.
An intermediate phenotype
C.
Both parental phenotypes simultaneously
D.
Neither parental phenotype
ANSWER :
C. Both parental phenotypes simultaneously
18.
Roan coat colour in cattle (mixture of red and white hairs) is an example of:
