What would be the approximate equilibrium potential for K+ if K+ outside the neuron is 1mM and inside is 100mM? How might that impact the resting potential compared to that for a typical neuron?
What will be an ideal response?
-123 mV; more negative resting potential than normal
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Mendel's experiments with garden peas differed from those of other plant hybridizers of the time in that:
A. Mendel studied true-breeding strains, rather than poorly defined material. B. Mendel focused on a small number of easily contrasted traits, rather than a large number of more complex traits. C. Mendel quantified his results and looked for statistical patterns, rather than simply noting the presence or absence of a trait among a group of offspring. D. Mendel performed no crosses between strains, whereas other hybridizers did. E. Mendel studied true-breeding strains, focused on a small number of easily contrasted traits, and quantified results.
If you want to analyze this data for evidence of linkage between sn and car, what is the null hypothesis?
In Drosophila, singed bristles (sn) and carnation eyes (car) are both caused by recessive X-linked alleles. The wild-type alleles (sn+ and car+) are responsible for straight bristles and red eyes, respectively. A sn car female is mated to a sn+car+ male and the F1 progeny are interbred. The F2 are distributed as follows:
A) Genes sn and car are linked.
B) Genes sn and car are not linked.
C) Genes sn and car are located close together on the same chromosome.
D) Crossing-over sometimes occurs between sn and car.
Mountains produce
a. rain shadows on the windward sides. b. precipitation on the leeward sides. c. deserts on the leeward sides. d. extensive grasslands in the upper elevations on the windward sides. e. any of these.
The ________ is a tumor suppressor, inspecting DNA and stopping cell division when it detects damage.
Fill in the blank(s) with the appropriate word(s).