What is the percentage of Bombay phenotype in a population?
a) 0.04%
b) 0.004%
c) 0.0004%
d) 0.0000004%
Explanation: about 4 per million
H-substance is a precursor to the……….
a) A antigen
b) B antigen
c) Rh antigen
d) both a and b
Explanation: for instance, the B allele must be present to produce the B enzyme that modifies the H-substance to become the B antigen. It is same for allele A.
What is the genotype of H-substance producing alleles in case of Bombay phenotype?
a) Hh
b) HH
c) hh
d) all of these
Explanation: H-substance will not produce, so subsequently no A or B antigen will be produced
Phenotypic expressions of the traits are of ………different types.
a) two
b) three
c) four
d) five
Explanation: 1. Qualitative traits and
2. Quantitative traits
Which of the following traits have few phenotypes that have sharp and more obvious differences among them?
a) qualitative
b) quantitative
c) both a and b
d) none of them
Explanation: they show discontinuous variations
Which of the following traits have large number of phenotypes that have small and less striking differences among them?
a) qualitative
b) quantitative
c) both a and b
d) none of them
Explanation: they show continuous variations
