Final exam !

describe a food chain starting with a producer and ending with the tertiary consumer. include organisms that are found in the same food chain in nature. state the name of the organism and what trophic level the organism is found at in this food chain.

What is a cordon and where is it found

Why reason best illustrates why hershey and chase chose to use viruses in their experiment?

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.