Bread “rises” when tiny gas bubbles are formed in bread dough. Dough is made with sugar, flour, water and yeast. Bakers have been using yeast to raise their bread for 100s of years. Yeast are unicellular organisms.

What are two reasons for why a species might disappear from the fossil record?

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.

Which of the following is required of a new drug?me