A population of snakes includes solid-colored snakes and banded (striped) snakes. On the mainland, the snakes are mostly solid. On a nearby island, the snakes are mostly banded. You hypothesize that the reason for this observation is that the environments on the mainland and island are different, and banded snakes are favored in the island environment. Which of the answer choices are possible alternative hypotheses to explain why the snakes on the island are mostly banded? Select all that apply.

Is there any species that went extinct in recent years due to natural causes (not caused by human interaction). if so, what caused it?

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.

Common symptoms of an iron-defiency anemia include muscle weakness shortness of breath and lightheadedness why does iron deficiency causes these symptoms