Top 150+ Solved Heredity and Variation MCQ Questions Answer
Q. . Inorder to find out the different types of gametes produced by a pea plant having the genotype AaBb it should be crossed to a plant with the genotype AIPMT - 2004
a. AABB
b. AaBb
c. aabb
d. aaBB
e. cessive
Q. . A woman with normal vision, but whose father was colourblind, marries a colourblind man. AIPMT - 2004 Suppose that the fourth child of this couple was a boy. This boy
a. May be colourblind or may be of normal vision
b. Must be colourblind
c. Must have normal colour vision
d. Will be partially colourblind since he is heterozygous for the colourblind mutant allele.
e. cessive
Q. .Which of the following is not a hereditary disease? AIPMT - 2004
a. Cystic Fibrosis
b. Thalassaemia
c. Haemophilia
d. Cretinism
e. cessive
Q. .Haemophilia is more commonly seen in human males than in human females because
a. a greater proportion of girls die in infancy AIPMT - 2004
b. this disease is due to a Y- linked recessive mutation
c. this disease is due to an X - linked recessive mutation
d. this disease is due to an X- linked dominant mutation
e. cessive
Q. .A woman with 47 chromosomes due to 3 copies of chromosome 21 is characterized by AIPMT - 2005
a. Super Femaleness
b. Triploidy
c. Turner's Syndrome
d. Down's Syndrome
e. cessive
Q. . A man and a woman, who do not show any apparent signs of a certain inherited disease, have Seven Children (2 daughters and 5 sons). Three of the Sons suffer from the given disease but none of the daughters affected. Which of the following mode of inheritance do you suggest for this disease? AIPMT - 2005
a. Sex - linked dominant
b. Sex - linked recessive
c. Sex - limited recessive
d. Autosomal dominant
e. cessive
Q. .Which one of the following is an example of polygenic inheritance ? AIPMT - 2006
a. Skin colour in humans
b. Flower colour in Miralibilis jalapa
c. Production of male honey bee
d. Pod shape in garden pea
e. cessive
Q. .Phenotype of an organism is the result of AIPMT - 2006
a. genotype and environmental interactions
b. mutations and linkages
c. Cytoplasmic effects and nutrition
d. environmental changes and sexual dimorphism
e. cessive
Q. .How many different gametes will be produced by a plant having the genotype AABbCC? AIPMT - 2006
a. Two
b. Three
c. Four
d. Nine
e. cessive
Q. .In Mendel's experiments with garden pea, round seed shape (RR) was dominant over wrinkledSeeds (rr), Yellow cotyledon (YY) was dominant over green cotyledon (yy). What are the expected Phenotypes in the F2 generation of the cross RRYY x rryy?
a. Round Seeds with yellow cotyledons, and wrinkled seeds with yellow cotyle dons
b. Only round seeds with green cotyledons
c. Only wrinkled seeds with yellow cotyledons
d. Only wrinkled seeds with green cotyledons
e. cessive
Q. Test cross involves AIPMT - 2006
a. Crossing between two genotypes with dominant trait
b. Crossing between two genotypes with recessive trait
c. Crossing between two F1 hybrids
d. Crossing the F1 hybrid with a double recessive genotype
e. cessive
Q. . If a colourblind woman marries a normal visioned man, their sons will be AIPMT - 2006
a. all colourblind
b. all normal visioned
c. one - half colourblind and one - half normal
d. three - fourths colourblind and one - fourth normal
e. cessive
Q. . In the hexaploid wheat, the haploid (n) and basic (X) numbers of chromosomes are AIPMT - 2007
a. n = 21 and X = 21
b. n = 21 and X =14
c. n = 21 and X = 7
d. n = 7 and X =21
e. cessive
Q. . Inheritance of skin colour in humans is an example of AIPMT - 2007
a. Point Mutation
b. Polygenic inheritance
c. Codominance
d. Chromosomal aberrations
e. cessive