Once a branch point occurs, do both the branches evolve?

What will be an ideal response?


one, both, or neither

Biology & Microbiology

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The presence of ________ in the microenvironment of cancer cells acts a potent inhibitor of cell proliferation.

A) IL-1 B) TGF-beta C) TNF-alpha D) IL-2 E) INF-gamma

Biology & Microbiology

Choose the alignment(s) which are the most parsimonious for the following DNA sequences: GCACCCTATGCA CCACCTTTAAGGCA

a) G-CACCCT--ATG-CA -CCACC-TTTAAGGCA b) GCACCCTAT---GCA CCACC-TTTAAGGCA c) G-CACCC--TAT-GCA -CCACCTTTAAGGCA d) GCACCC--TATGCA CCACCTTTAAGGCA

Biology & Microbiology

Enzymes

a. control the speed of a reaction. b. change shapes to facilitate certain reactions. c. may place physical stress on the bonds of the substrate. d. may require cofactors. e. do all of these.

Biology & Microbiology

In the creation of a DNA profile, what type of DNA is used?

A. Microsatellites D. Transposons B. Short tandem repeats E. Fragment length polymorphisms C. Introns

Biology & Microbiology