What discovery by T. H. Morgan finally determined that genes were carried on chromosomes?
A. the finding of complete dominance
B. discovery of the Rh blood group
C. sex-linked inheritance of eye color in fruit flies
D. heat-sensitivity of certain enzymes determining coat color
Answer: C
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Monoclonal implies that the
A) antibodies come from a twin. B) antibodies are identical. C) cancer cells are all of one type. D) antigens are from a single source.
The tolerance of facultative anaerobic bacteria to lethal superoxide when they are exposed to air is due to
A. The lack of CYP C oxidase B. Presence of CYP C oxidase C. Inability to form the superoxide radical D. Presence of superoxide dismutase and catalase
These slender, or gracile, australopithecines are found later in the fossil record than A. afarensis
A) founder effect B) Homo Habilis C) Latin binomial D) Australopithecus Africanus E) convergent evolution F) Ardipithecus ramidus G) Neanderthals H) chimpanzees I) Homo erectus J) astragalus
You are a virologist interested in studying the evolution of viral genomes. You are studying two newly isolated viral strains and have sequenced their genomes. You find that the genome of strain 1 contains 25% A, 55% G, 20% C, and 10% T
You report that you have isolated a virus with a single-stranded DNA genome. Based on what evidence can you make this conclusion? (a) single-stranded genomes always have a large percentage of purines (b) using the formula: G – A = C + T (c) Double-stranded genomes have equal amounts of A and T (d) Single-stranded genomes have a higher rate of mutation