If a tall plant is crossed with a dwarf plant, this type of cross is called:
Dihybrid
Monohybrid
Reciprocal
Trihybrid
Haemophilia is more common in male because it is a
Recessive character carried by Y-chromosome
Dominant character carried by Y-chromosome
Dominant trait carried by X-chromosome
Recessive trait carried by X-chromosome
Which one is a hereditary disease?
Cataract
Leprosy
Blindness
Phenylketonuria
Both husband and wife have normal vision though their fathers were colourblind. The probability of their daughter becoming colourblind is
25%
0%
50%
75%
Law of independent assortment can be proved on the basis of which of the following ratios:
3 : 1
2 : 1 : 1
9 : 3 : 3 : 1
2 : 1
Which of the following terms represents a pair of contrasting characters or factors?
Allele
Phenotype
Homozygous
Heterozygous
A true breeding tall and smooth -seeded pea plant is crossed with a true breeding dwarf and wrinkled-seeded plant. The fact that F1 plants were all tall demonstrates:
Principle of assortment of characters
That recombination of characters appears in F2 generation
That P1 tall plants were heterozygous
That tallness was dominant to dwarfness
Two homologous genes are exactly similar in genotype called:
Hemizygous
None of these
How many genes a child receives from its father?
100%
