A) 240
B) 360
C) 400
D) 720
Correct Answer: C
Solution :
A cross yielded dihybrids and at a time consider two pairs of contrasting characters is known as dihybrid cross. The phenotype and genotype of Ty, generation of a dihybrid cross between pea plants with yellow round and green wrinkled seeds.Number of Individuals | Genotype Class | Phenotype Class |
1 2 2 4 1 2 1 2 1 | YYRR YY Rr, YY Rr Yy RR, Yy RR, Yy Rr, Yy Rr YYrr YY rr, Yy Rr yy rr yy rr, yy rR yy rr | Homozygous Yellow round Heterozygous Yellow round |
Yellow round = 9 | ||
Homozygous yellow Wrinkled Heterozygous yellow wrinkled | ||
Yellow wrinkled = 3 | ||
Homozygous green round Heterozygous green round | ||
Green round = 3 | ||
Homozygous green wrinkled | ||
Green wrinkled = 1 | ||
16 | - | : 3 : 3 : 1 |
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