RR (red) is crossed with rr (white). All the Rr offsprings are pink. This is an indication that R gene is:
Hybrid
Recessive
Incompletely dominant
Mutant
How many genes a child receives from its father?
25%
50%
75%
100%
Two homologous genes are exactly similar in genotype called:
Heterozygous
Hemizygous
Homozygous
None of these
Which of the following terms represents a pair of contrasting characters or factors?
Allele
Phenotype
Blue eye colour is recessive to brown eye colour. A brown eyed man whose mother was blue eyed marries a blue eyed women. The children shall be
Both blue eyed and brown eyed 1 : 1
All brown eyed
All blue eyed
Blue eyed and brown eyed 3 : 1
Both husband and wife have normal vision though their fathers were colourblind. The probability of their daughter becoming colourblind is
0%
A dihybrid condition is
tt Rr
Tt rr
tt rr
Tt Rr