When both water and salts are present in a solution and the cell needs water, which process enables the cell to obtain the water without the salt? diffusion through a nuclear membrane

osmosis through a permeable membrane

osmosis through a semipermeable membrane

diffusion through a permeable membrane

Next pretest: evolution select the correct answer in a laboratory population of flies, the female flies are gray and the males are yellowish gray. biologists observed that all the male flies had an equal chance for reproduction, but the male flies with the brightest colors were more likely to successfully reproduce. what phenomenon could explain such a change? a sexual selection b. disruptive selection c. stabilizing selection d. directional selection

Acertain species of fish can have either long or short fins. the allele for long fins is dominant over the allele for short fins. a heterozygous, long-finned fish is crossed with a homozygous, short-finned fish. of the offspring, will have long fins and be , and will have short fins and be .

What is the difference between how ionic and covalent bonds form