In humans hemophilia is cuased by a recessive allele on the x chromosome. suppose a man with hemophilia has children with a healthy woman whose mother had hemophilia. what is the probability that their second child will have hemophilia?

probability that their second child will have hemophilia= 1/2

Explanation:

Here, the woman had hemophilic mother (XhXh) making the woman carrier for the disease. Genotype of the woman =XhX

Genotype of hemophilic man = XhY

As per attached punnet square, out of total four children, one son and one daughter would be affected. One daughter would be normal but carrier. The other son would be normal.

Total probability of getting their second child affected with hemophilia = 1/4 daughter + 1/4 son = 1/2 (50%).

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.