If a pea plant has a genotype sstt what are the possible genetic combinations that could be present ina single grain of pollen produced by the plan? a- ss, tt, st b-st, st, st c- ss, tt, st, st d- st, st

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).

In meiosis ii during anaphase ii which structures separated homologous chromosomes or sister chromatids

Which anatomical plane is the only one that could not show both the sternal region and vertebral region