Metastatic cancer is
A) terminally differentiated.
B) malignant.
C) invasive.
D) B and C only
E) A, B, and C
D
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Monocots and eudicots diverged about:
A. 500 million years ago B. 125 million years ago C. 60 million years ago D. 10 million years ago E. very recently
Prions are
A. strands of nucleic acids encased in a protein coat. B. viral nucleic acids integrated into the host chromosomes. C. viral-infected cells. D. infectious proteins with no associated nucleic acid. E. proteins coded by genes.
The most important concept in the field of population genetics is
A. natural selection. B. population size. C. rates of mutation. D. genetic variation. E. phenotypic variation.
When one portion of a chromosome becomes physically part of another chromosome, the type of mutation is referred to as
A) a nonsense mutation. B) a translocation. C) an inversion. D) a duplication. E) a nonstop mutation.