Biology, asked by kennykipa6144, 1 year ago

A person first crossed pure-bred pea plants having round-yellow seeds with pure-bred pea plants having wrinkled-green seeds and found that only A-B type of seeds were produced in the F1 generation. When F1 generation pea plants having A-B type of seeds were cross-bred by self-pollination, then in addition to the original round-yellow and wrinkled-green seeds, two new varieties A-D and C-B type of seeds were also obtained.
(a) What are A-B type of seeds?
(b) State whether A and B are dominant traits or recessive traits.
(c) What are A-D type of seeds?
(d) What are C-B type of seeds?
(c) Out of A-B and A-D types of seeds, which one will be produced in (i) minimum numbers, and (ii) maximum numbers, in the F2 generation?

Answers

Answered by dipanshulamba123
5

Answer:

a)A-B type seeds are round yellow

b) A (round) B (Yellow) are dominant traits

c) A-D type seeds are round green

d)C-B type seeds are wrinkled - green

e)if the F2 generation 1)A-D type seeds will produce in minimum numbers

2)A-B type seeds will produce in maximum number

Explanation:

Answered by Anonymous
1

Answer:

a) A-B type of seeds are Round-Yellow seeds.

b) A and B both are dominant traits.

c) A-D type of seeds are Round-Green seeds.

d) C-B type of seeds are Wrinkled-Yellow seeds.

e) In F2 generation:

   i) A-D type of seeds will be produced in minimum number

   ii) A-B type of seeds will be in maximum number

Explanation:

It is an example of a dihybrid cross.

In a dihybrid cross, the offspring in F1 generation will receive the dominant characters from both the parents. In this case the dominant characters are Round shape and Yellow color.

When self pollination is done in F1 generation, the dominant and recessive characters are independently assorted in F2 generation.

Therefore, both the dominant and recessive characters are seen in F2 generation.

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