Contents

The Bombay phenotype in human is an example of ………..
a) Co-dominance        
b) recessiveness
c) Epistasis        
d) polygenic inheritance

c

Explanation: Named for the city in which it was first discovered, the "Bombay phenotype" describes individuals whose RBCs lack the H antigen. Because the A and B antigens cannot be formed without the H antigen precursor, their RBCs also lack these antigens.



What is the phenotypic blood group of a person with Bombay phenotype?
a) A    
b) B                
c) AB 
d) O

d



What is the genotypic blood group of a person with Bombay phenotype?
a) A                            
b) B
c) AB                         
d) one of the above


d

The production of A or B antigen also dependent upon……….
a) L-section                
b) H-substance
c) Rh-factor                
d) all of these

b

Explanation: H substance is produced by another gene “H”. its recessive allele “h” does not produce H-substance



The gene “H” for the production of H-substance is present on chromosome..…
a) 9                 
b) 19               
c) 11               
d) 7

b

Explanation: ABO locus on chromosome 9



 Who discovered Bombay phenotype in Bombay now Mumbai, India?
a) Carl Correns           
b) Gregor Mendel
c) Bernstein                
d) Dr. Y.M. Bhende

d

Contents Details