The genes along a particular linear chromosome are illustrated below.
The frequency of crossover events between these loci will be least frequent when considering genes
A) a and b.
B) b and c.
C) c and d.
D) d and e.
E) a and e.
B) b and c.
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A(n) ________ is an instrument used to separate subcellular structures and macromolecules on the basis of size, shape, and density. ________ developed this instrument in Sweden during the period 1925—1930.
Fill in the blank(s) with the appropriate word(s).
When PCR amplification of SSU (small subunit ribosomal RNA) yields a population of different PCR products of about the same molecular weight, these fragments can be separated for further analysis by ________.
A. denaturing gradient gel electrophoresis B. size exclusion chromatography C. isoelectric focusing D. DNA hybridization
Endosteum
What will be an ideal response?
Enzymes function to
A. react with other enzymes to form a product. B. regulate messages between cells. C. catalyze chemical reactions. D. transport molecules and ions across membranes.