In the f2 generation of a homozygous round (aa) × homozygous wrinkled (aa) cross in peas, three seeds are chosen at random. what is the probability that two seeds are round and the other is wrinkled?
a) (1/4)^3
b) 3(1/4)(3/4)^2
c) 3(1/4)^2(3/4)
d) (3/4)^3

Option B

Explanation:

First generation cross of homozygous round (AA) × homozygous wrinkled (aa) will give following offspring

Aa, Aa, Aa, Aa

F2 generation of a homozygous round (AA) × homozygous wrinkled (aa) cross in peas will give following offspring

Aa * Aa

AA, Aa, Aa, aa

If we consider that trait of round shaped seed is dominant over wrinkled shaped seed. Then out of four offspring AA, Aa, Aa, aa,

Probability of choosing a wrinkled seed is

Probability of choosing a round  seed is

So the probability that two seeds are round and the other is wrinkled is

Hence, option B is correct

common management practices in dairy and poultry farming are: (i) proper shelter facilities and their regular cleaning. (ii) some basic hygienic conditions such as clean water, nutritious food, etc. (iii) animals are kept in spacious, airy, and ventilated place.

glacial erosion, the picking up and movement of earth beneath a glacier, is also referred to as plucking. erosion and transportation of individual pieces of bedrock, especially large "joint block occur as a result of this glacial erosion. plucking is type of erosion in which rocks become frozen into the bottom and sides of the glacier.as the glacier moves downhill it 'plucks' the rocks frozen into the glacier from the ground.