Question

The plants bearing round yellow colored (RrYy) seeds are self pollinated. Represent the result obtained in the F2 generation of dihybrid cross with the help of a checker board. Mention the varieties of plants obtained in F2 generation ​

Answer 1

Explanation:

A cross is made between homozygous yellow round seeds(YYRR) to another homozygous green wrinkled seeds(yyrr). In the F1 generation, all plants are heterozygous yellow round(YyrRr). When this plant is subjected to self pollination, in the F2 generation, 9 plants are Yellow round, 3 plants are yellow wrinkled, 3 plants are green round and 1 plant is green wrinkled are formed.

The dihybrid phenotypic ratio is 9:3:3:1.

So, the correct option is ‘9:3:3:1’.

Answer 2

Answer:

9:3:3:1

Explanation:

a cross is made between homozygous yellow round seeds(YYRR) to another homozygous green wrinkled seed (YYrr). in the F1 genaration, all plants are heterozygous yellow round (YyrRr).when this plant is subjected to self pollination in the F2 genaration 9 plants are yellow wrinkled, 3 plants are green round and 1 plant is green wrinkled are formed.

the dihibrid phenotypic ratio is 9:3:3:1