Which of the following are accurate statements about "muller's ratchet" (select all that apply) a. recombination among sexual genotypes is able to recover the fitter genotypes that have been lost by genetic drift. b. muller's ratchet is expected to have negligible effects on small populations c. the term "ratchet" is used because the accumulation of alleles is irreversible in small asexual populations d. because asexual individuals inherit the mutations of their ancestors, as well as new mutations, the frequency of the most-fit genotype gradually decreases over time until subject to stochastic extinction.

How do cells grow and reproduce to maintain homeostasis?

Sally and sue were investigating the topic of friction in science. they used a small car and a ramp as seen in the picture to test what they were learning. they knew that they slipped easily on waxed floors but not on carpet, so they decided to change the material on the surface of the ramp to see what happened. they planned to use glass, carpet, aluminum foil, and sandpaper and run the car down the ramp over each surface. what would be the best research question to guide the girls' experiment? a) does the amount of surface area affect the friction on the moving car? b) will the car travel fastest on the glass surface? c) how does the angle of the ramp affect the speed of the car? d)do rougher surfaces tend to create more friction than smooth surfaces?

Sarah and john are having a discussion on genetic diversity. sarah believes that it happen over a long period of time. john it happens immediately. who is correct? a. sarah is correct because genetic diversity occurs over a long period of time. b. john is correct because genetic diversity occurs immediately. c. both are correct because genetic variation can occur or long period of time. d. neither are correct because genetic diversity occurs over any period of time