Natural selection
A. is evolution.
B. is a key mechanism that causes evolution to happen.
C. occurs at the population level.
D. results in reproductive success.
E. occurs at the population level and is a key mechanism that causes evolution to happen.
B. is a key mechanism that causes evolution to happen.
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The evolution of petals through the AP3 gene is best explained by
A. a new gene mutation. B. the modification of an existing gene for a new function. C. homoplastic convergence. D. gene duplication and divergence. E. conserved genes.
The field of epigenetics has opened the way for the development of a new class of anticancer drugs ____
a. that are very similar to many chemotherapy treatments but are much more targeted and effective b. that stop mutations before they occur in individuals with a predisposition to certain kinds of cancer c. that increase the level of methylation in cancer cells d. used specifically to treat breast cancer because the key genes involved in this cancer cannot be epigenetically modified e. because of the discovery that epigenetic modification of key genes is important in some cancers and the fact that epigenetic changes are reversible
There are no direct-to-consumer genetic tests available that screen for breast cancer susceptibility
a. True b. False
The ordering of bases in a gene determines the order of:
A) mRNAs on a ribosome. B) genes on a chromosome. C) amino acids in a protein. D) genes in a genome.