During the development of the vulva in Caenorhabditis, binding of ____ to its receptor initiates development into ____ cell. (Select all correct choices.)
A. EGF; a Type 1
B. EGF; a Type 2
C. Notch; a Type 1
D. Notch; a Type 2
E. EGF; an anchor
A,D
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What would be the most likely outcome if the genetic code was not degenerate?
A. The effect of some mutations would decrease. B. The effect of some mutations would increase. C. The number of stop codons would increase. D. The mutation rate would remain the same.
Which of the following is NOT one of the types of variation that occurs within individuals?
A) genetic variation B) environmental variation C) normalizing variation D) genotype-by-environment variation
Walleye pike fish are which of the following?
A. secondary consumers B. tertiary consumers C. primary consumers D. producers E. decomposers
The vertebrate central nervous system consists of a brain and _________.
Fill in the blank(s) with the appropriate word(s).