The grey tree frog, Hyla versicolor has 48 chromosomes in each cell (except gametes, which have 24). When its karyotype is compared to Hyla andersonii’s karyotype (2n = 24), it looks like H. versicolor has a double set of H. andersonii’s karyotype. Thus, we call H. versicolor a(n) [A] (3 root word) to indicate that its polyploidy resulted form a single parent species, not from two different parent species; and we call H. versicolor a(n) [B] (2 root word) to indicate that it has twice as many chromosomes as its diploid parent species, or blending the two together, we would call it a(n) [C] (3 root word).

The kidney filters potentially toxic substances in the blood, and thus “clears” the blood of those substances. this clearance function is dependent upon and proportional to the diffusion gradient of the substance across filtering capillaries, i.e. if the concentration of the substance is doubled, twice as much will be cleared from each ml of blood that is filtered. suppose that the body produces a constant amount of a substance x per unit of time. the kidneys eliminate substance x at a rate directly proportional to the concentration of the substance and the volume of blood cleared each minute (c): elimination = c × [x], where [x] is the steady-state concentration of substance x. imagine an individual with an initial concentration of x equal to [x]0 who develops kidney disease. her baseline clearance c0 drops to one half of the original (½c0). what is the new steady state concentration of x? (for simplicity, assume that substance x is 100% filtered by the kidney).

Which of the following terms best matches this definition: the process where humans choose the traits that will be present in the next generation through breeding. question 4 options: genetic determinism artificial selection acquired selection natural selection

How did alexander fleming’s research solve a societal problem? he developed ways to treat inherited diseases. he advocated for regular hand washing to kill germs. he discovered a new type of medicine that could treat infections. he discovered the cause of mad cow disease, an emerging disease.