Cause of red-green colour blindness is:
A.Excessive drinking
B.Vitamin deficiency
C.Inheritance
D.None of these
Category: Human Genetics and Eugenics Mcqs
Fraternal twins are produced when:
A.two sperms fertilize an ovum and the blastomeres after 1st cleavage separation completely
B.Two ova are fertilized simulataneously by two different sperms
C.One sperm fertilizes an ovum and two blastomeres of 1st cleavages separate completely
D.None of these things happen
Which of these genotypes and phenotyes may be the correct result of aneuploidy in sex chromosomes:
A.22 pairs + XXY males
B.22 pairs + XY males
C.22 pairs + XXY females
D.22 pairs + Y males
Sickle-cell anaemia is a case of:
A.Complete dominance
B.Incomplete dominance
C.Both (a) & (b)
D.None of these
Haemophilia is caused by the deficiency of:
A.Thromboplastin
B.RBCs
C.WBCs
D.None of these
Who recommended pedigree analysis and twin study for determining human genetic traits:
A.Sir Francis Galton
B.Weinberg
C.Hardy
D.Muller
Colour blindness in man is a:
A.Sex-linked disorder
B.None of these
Phenotype of phenylketonura shows:
A.Mental retardation
B.Eczema on skin
C.Abnormal bones & teeth
D.All of these symptoms as mentioned baove
Haemophilia is a disease in which there occurs:
A.Clumping of RBCs
B.Phaocytosis by the WBCs of the blood
C.Haemolysis of RBCs
D.Failure of blood coagulation
Universal donor is a person of blood group:
A.A
B.B
C.O – group
D.AB
