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?
1. AaBb
2. AaBB
3. AABb
4. AABB
Two genes R and Y are located very close on the chromosomal linkage map of the maize plant. When RRYY and rryy genotypes are hybridized, then F2 segregation will show:
1. higher number of the recombinant types
2. segregation in the expected 9:3:3:1 ratio
3. segregation in a 3:1 ratio
4. higher number of the parental types
How many different kinds of gametes will be produced by a plant having the genotype AABbCC?
1. Three
2. Four
3. Nine
4. Two
In Mendel's experiments with garden peas, round seed shape (RR) was dominant over wrinkled seeds (rr), and yellow cotyledon (YY) was dominant over green cotyledon (yy). What are the expected phenotypes in the F2 generation of the cross RRYY x rryy?
1. | Only round seeds with green cotyledons |
2. | Only wrinkled seeds with yellow cotyledons |
3. | Only wrinkled seeds with green cotyledons |
4. | Round seeds with yellow cotyledons and wrinkled seeds with yellow cotyledons |