In a pedigree, if two normal parents produce a child with a genetic disorder, then the disorder is caused by a(n) ___ allele
Fill in the blank(s) with the appropriate word(s).
Ans: recessive
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The release of acetylcholine from the terminal of a motor neuron is most directly linked to the _____
A) entry of potassium into the axon terminal B) exit of potassium from the axon terminal C) entry of sodium into the axon terminal D) exit of sodium from the axon terminal E) entry of calcium into the axon terminal
This person is credited with devising powerful microscope
A. Watson B. Darwin C. leeuwenhok D. Hooke E. Koch
The seabirds with an ecological role similar to land-based hawks, falcons, and vultures are the:
a. gulls and terns. b. skuas and jaegers. c. avocets and sandpipers. d. curlews and turnstones. e. eiders and puffins.
Comparing cells synthesizing secretory proteins and cells secreting steroid hormones, the cells synthesizing the steroid hormones have
A) more rough ER. B) more smooth ER. C) equal amounts of smooth and rough ER. D) equal amounts of smooth and rough ER, but more lysosomes. E) equal amounts of smooth and rough ER, but fewer lysosomes.