RR (red) Antirrhium is crossed with WW (white) one. Offspring RW are pink. This is an example of
dominant-recessive
incomplete dominance
hybrid
supplementary genes
An organism with two identical alleles is
dominant
heterozygous
homozygous
Write the ratio of a typical of dihybrid cross.
2:4:4:1
2:1:1:0
9:3:3:1
9:1:16:1
A gene pair hides the effect of another. The phenomenon is
epistasis
dominance
mutation
None of these
Who proved that DNA is basic genetic material?
Griffith
Watson
Boveri and Sutton
Hershey and Chase
First geneticist/father of genetics was
de Vries
Mendel
Darwin
Morgan
An allele is dominant if it is expressed in
both homozygous and heterozygous states
second generation
heterozygous combination
homozygous combination
The hybrid test cross ratio will be:
1:1
1:1:1:1
2:1:1
A colourblind girl is rare because she will be born only when
her mother and maternal grandfather were colourblind
her father and maternal grandfather were colourblind
her mother is colourblind and father has normal vision
parents have normal vision but grand parents were colourblind
Diploid chromosome number in humans is
46
44
48
42
