A species of fly lacks wings. How would biologists explain how a species of fly without wings evolved from an ancestral fly species with wings?

Why do gametes contain half the number of chromosomes as body cells?

Can someone reword this? The purpose of this lab is to observe the effects of pressure on a Cartesian Diver.

Multiple Choice Seed-bearing plants differ from all other plants in that A. they have only xylem and no phloem. B. they have a gametophyte generation. C. their gametes do not require water for fertilization to occur. D.

Which organism is an animal-like protist? A. slime mold B. dinoflagellate C. amoeba D. truffle

What is the primary reason that a hot spring will kill a fishplaced in it, but encourage the growth of certain bacteria? A.

What makes water a polar molecule? Choose 1 answer: It has fully positive and negative charges. It contains ionic bonds. C) It is able to dissolve nonpolar substances. It contains partial positive and negative charges.

What characteristics are common in all mammals?

What is the function of the nucleolus? *Subject was not below, but the subject is science.

Which antiparkinson drug causes an increase in the levels of dopaminergic stimulation in the central nervous system and therefore allows a decreased dose of other medications?

According to Herbert Kaufman, which of the following are reasons health care workers commonly resist change?