In an evolutionary classification scheme, species within one genus should
a) have identical genes
b) be less closely related to one another than they are to species in another genus
c) be limited to species that can interbreed
d) be more closely related to one another than they are to species in another genus
Ans: d) be more closely related to one another than they are to species in another genus
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Which is NOT a checkpoint in the cell cycle?
A. the transition from G1 to S phase B. the transition from G2 to M phase C. the transition from M phase to G1 D. the beginning of M phase E. All of these choices are checkpoints in the cell cycle.
Often, in the absence of experimental data, computerized algorithms are used to predict gene structures from large sequences. What is this approach known as?
What will be an ideal response?
Like all theories, the cell theory is never accepted by scientists as an "absolute truth." Which statement best explains why?
A) A theory evolves from collecting information, forming hypotheses, and then verifying the predictions of the hypotheses. B) A theory is only a collection of hypotheses that have been verified by experimentation. C) A scientific theory is not based on experimental evidence or observations. D) Future evidence may cause a theory to be modified or even rejected
The study of the immune system is known as:
Fill in the blank(s) with the appropriate word(s)