Awoman who is a carrier for x-linked recessive hemophilia (she does not have the disease) marries a man who does not have hemophilia. they have a daughter, named angela, who does not have the disease. angela marries george, who also does not have hemophilia. angela and george have a son named robbie. what is the chance that robbie will have hemophilia?

The answer is 25%

Hemofilia is inherited by x-linked recessive pattern. Only woman could become recessive since woman has two x genes but man only has one.

The first generation is a carrier woman with normal man. The chance of their daughter to inherit the defect gene from her mother would be 50%. Then the daughter(angela) marries a normal man (George). The chance of Angela giving defect gene also 50%. The resultant chance would be: 50%*50%= 25%

burning of wood and coal

explanation:

the panel also concluded there's a better than 95 percent probability that human-produced greenhouse gases such as carbon dioxide, methane and nitrous oxide have caused much of the observed increase in earth's temperatures over the past 50 years.

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.