Urine of a person suffering from which of these disorders turns black on exposure to air:
A.One suffering from phenylketonuria
B.One suffering from alkaptonuria
C.One suffering from sickle cell anemia
D.None of these
Category: Human Genetics and Eugenics Mcqs
Homologous chromosomes include:
A.One smaller and one larger chromosomes
B.One chromosome from each parent
C.One complete and one incomplete chromosome
D.None of these
Hereditory characters are passed from parent to offspring chiefly through:
A.Proteins
B.Enzymes
C.Genes
D.None of these
Identical twins are born when:
A.Egg cell fails to divide
B.Two egg cells are fertilized
C.Fertilized egg after 1st cleavage divides into two separate blastomeres
D.Egg cell undergoes incomplete division
Which of these is biologically incompatible marriage because of chances of Erythroblastosis foetalis:
A.Rh+ man and rh- woman
B.rh- man and rh- woman
C.Both RH+ parents
D.None of these
For a person of blood group -A, the blood groups acceptable for transfusion are:
A.A&B
B.B&O
C.A, B, AB&O
D.A&O
Total number of autosomes in fertilized egg of man is:
A.44
B.22
C.23
D.46
Sickle-cell anaemia is due to:
A.Hormone
B.Viral infection
C.Genes
D.Bacteria
Colour blindness generally affects males but factor for it is transmitted to boys through mother, this is because the factor is located on:
A.X-chromosome
B.Y-chromosome
C.Both (a) & (b)
D.None of these
Albinos are reported only in:
A.White race
B.Black race
C.Both (a) & (b)
D.None of these
