Mendel's Dihybrid Experiments
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The punnett square shown below represents the pattern of inhiritance in dihybrid cross when yellow (Y) is dominant over while (y) and Round (R) is dominant over wrinkled (r) seeds:
A plant of type 'H' will produce seeds with genotype identical to seeds produced by the plants of ?
Type P
Type N
Type M
Type J
The phenotypic ratio for Mendel’s dihybrid cross is
3:1
1:2:1
9:3:3:1
1:1
How many different phenotypes and genotypes are obtained in the F2 generation of Mendel’s dihybrid cross?
4 phenotypes and 9 genotypes
4 phenotypes and 16 genotypes
16 phenotypes and 8 genotypes
2 phenotypes and 16 genotypes
In the above cross, what is the allelic composition of the female gamete?
(aB)
(Ab)
(ab)
(AB)
In a dihybrid cross AABB × aabb, F2 progency of AABB, AABb, AaBB and AaBb accurs in ratio of________
1: 1 : 1 : 1
9 : 3 : 3 : 1
1 : 2 : 2 : 1
1 : 2 : 2 : 4
Mendel’s typical dihybrid cross is
YYRR × yyrr
YyRr × YyRr
YYRr × yyrr
yyrr × yyrr
A tall violet flowered plant (TTVV) is crossed with a dwarf white flowered plant (ttvv). When the F1 plants are self pollinated, a total of 1600 F2 plants are produced. Among them, how many plants are tall with white flowers?
900
100
600
300
The gametes produced by Mendel’s F1 dihybrid are
(YR) and (Yr)
(YR), (Yr), (YR) and (yr)
(YR) and (yR)
(yR) and (Yr)
The ratio 9:3:3:1 represents:
Mendel’s dihybrid phenotypic ratio
Mendel’s monohybrid genotypic ratio
Mendel’s monohybrid phenotypic ratio
Mendel’s dihybrid genotypic ratio
A cross between pure-bred pea plants having yellow round seeds with those having green wrinkled seeds would produce F1 plants with:
Round green seeds
Wrinkled green seeds
Wrinkled yellow seeds
Round yellow seeds