Is it possible to be a "carrier" for achondroplasia (phenotypically normal but capable of passing the allele to one's offspring)?
a. Yes
b. No
b
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Genes whose expression (or abnormal expression) causes cancer are called
A. carcinogens. B. oncogenes. C. cancer genes. D. progenes.
Many species of gulls feed their chicks by regurgitating food. When parents return from foraging, the gull chicks peck at a red spot on the parent's bill, which causes the parents to open the bill and regurgitate their food
Chicks will peck at a red dot painted on any long, slender object. For the chicks, pecking is a ____ and the red dot is a ____ . For the adult gulls, the chicks pecking at their bills is a ____ and regurgitating food is a ____ . Fill in the blank with the appropriate word.
The highest level of the hierarchy of life is the ____
a. population b. biosphere c. ecosystem d. multicellular organism e. cell
Four of the five answers listed below are innervated by the autonomic nervous system. Select the
exception. a. skeletal muscles b. smooth muscles c. heart d. endocrine glands e. exocrine glands