A pure-breeding tall plant producing oval fruit as described in Problem 2 is crossed to a pure-breeding short plant producing round fruit. a. The F1 are crossed to short plants producing oval fruit. What are the expected proportions of progeny phenotypes? b. If the F1 identified in part (a) are crossed to one another, what proportion of the F2 are expected to be short and produce round fruit? What proportion are expected to be tall and produce round fruit

People who exercise for an hour may have lower cholesterol levels. is that a statement? a law? or a hypothesis?

Where substance is produced during cellular respiration

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).