In the absence of predators, the prey population
a. increases rapidly
b. decreases slowly
c. decreases rapidly
d. increases rapidly
a
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The variables that investigators try to keep the same for both the experimental and the control groups are
(a) independent. (b) controlled. (c) dependent. (d) a and c.
According to the selfish DNA hypothesis, which symbiotic relationship most closely resembles that of transposable elements that move within the organism’s genome without preventing survival of the organism?
A. mutualism B. commensalisms C. parasitism D. competition E. neutralism
what is the mechanism of clonal de-selection (deletion) called?
What will be an ideal response?
Answer the following questions true (T) or false (F)
1. The archenteron is mostly made of the mesoderm. 2. The notochord induces the formation of the neural plate in vertebrates. 3. Somites are repeating blocks of ectodermal tissue.