Which result of experiment 1 supports the hypothesis that cell-to-cell communication is involved in the determination of cell fate? the fate of an isolated ab cell differs from that of an ab cell in an intact embryo. the fate of an isolated p1 cell is indistinguishable from that of a p1 cell in an intact embryo. at the two-cell stage, isolated blastomeres can divide and differentiate. several different blastomeres can produce both neurons and muscle tissue.

The large ground finch obtains food by cracking seeds. what is its short, strong beak an example? a) tendency toward perfection b) adaptation of a species over time c) selective use and disuse of an organ over time d) scarcity of recourses

The diagram shows the layers of earth. convection currents in which region influence the movement of tectonic plates

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.