In a mollusk, which of the following acts like a kidney by carrying out excretion?
a. metanephridia
b. chaetae
c. ctenidia
d. radula
a. metanephridia
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Pleiotropy refers to:
A. the interaction of two genes affecting a single trait. B. the interaction of multiple genes affecting multiple traits. C. the interaction of multiple genes affecting a single trait. D. a single gene having multiple effects. E. two different norms of reaction for a single trait.
Which of the following was propagated and promoted for use by the Soil Conservation Service but is now listed as a Federal Noxious Weed?
A) purple loosestrife B) Australian paperbark tree C) kudzu D) evening primrose
Opponents of the use of recombinant DNA technology in agriculture argue that the FDA should require the _____ of
food containing transgenic ingredients. a. labeling b. testing c. posting of safe handling guidelines d. cloning e. spreading
In humans, meiosis is a part of
What will be an ideal response?