"owls eat rats, mice, shrews, and small birds. assume that, over a period of time, an owl consumes 5,000 j of animal material. the owl loses 2,300 j in feces and owl pellets and uses 2,500 j for cellular respiration. what is the production efficiency of this owl? "

Duchenne muscular dystrophy is a serious condition caused by a recessive allele of a gene on the human x chromosome. the patients have muscles that weaken over time because they have absent or decreased dystrophin, a muscle protein. they rarely live past their twenties. how likely is it for a woman to have this condition? a) women can never have this condition. b) one-fourth of the daughters of an affected man would have this condition. c) one-half of the daughters of an affected father and a carrier mother could have this condition. d) only if a woman is xxx could she have this condition.