Natural selection causes..

a: plants and animals to produce more offspring than can survive

b: changes in the environment

c: only favorable traits to exist in a population

d: changes in the frequencies of certain alleles in a population

Identify any four organelles that should be present in the eukaryotic organism and describe the function of each organelle

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.

Iwanna go do something with my ideas? ?