Question

Write the schematic representation of One gene inheritance? ​

Answer 1

Answer:

A dihybrid cross is a cross between F

1

offspring of two individuals that differ in two traits of a particular interest. For example, Mendel took homozygous dominant Round and yellow seeds (RRYY) and crossed it with homozygous recessive wrinkled and green seeds (rryy), the progeny obtained in F

1

generation were all round and yellow seed (RrYy). The offsprings were heterozygous for both R and Y gene. The F

1

plant has four types of gametes, RY, Ry, rY, and ry. For genes on separate chromosomes, each allele pair shows independent assortment. Thus, by crossing F

1

, the phenotypic ratio was 9:3:3:1, where 9 is yellow and round seeds, 3 represents round and green seeds, 3 represents yellow and wrinkled seeds and 1 represents green and wrinkled seeds.

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