A common test to find the genotype of a hybrid is by
crossing of one F2 progeny with male parent
crossing of one F2 progeny with female parent
studying the sexual behaviour of F1 progenies
studying the sexual behaviour of F1 progenies
D.
studying the sexual behaviour of F1 progenies
Test cross, crossing of F1 progeny to the recessive parent is used to find the genotype of the progeny.
A human male produces sperms with the genotypes AB, Ab, aB, and ab pertaining to two diallelic characters in equal proportions. What is the corresponding genotype of this person?
AaBb
AaBB
AABb
AABb
Two genes R and Y are located very close on the chromosomal linkage map of a maize plant. When RRYY and rryy genotypes are hybridised, the F2 segregation will show:
higher number of the recombinant types.
segregation in the expected 9 : 3 : 3 : 1 ratio
segregation in 3 : 1 ratio
segregation in 3 : 1 ratio
Haploids are more suitable for mutation studies than the diploids. This is because
Haploids are reproductively more stable than diploids
mutagens penetrate in haploids more effectively than is diploids
haploids are more abundant in nature than diploids
haploids are more abundant in nature than diploids
Inheritance of skin colour in humans is an example of
chromosomal aberration
point mutation
polygenic inheritance
polygenic inheritance
