Alex complains of chronic insomnia. He has had a medical check-up and is healthy, yet he has difficulty falling asleep. What is the best advice you can give in this situation?

2. sketch the inside of the bean nodule, and describe or label what you observed with the hand lens.

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.

This rapid change in species that rarely leaves behind fossil evidence is referred to as