In nature, genes with the potential to produce serious defects are acted against and kept at a low
frequency by:
a. neutral variations.
b. stabilizing selection.
c. disruptive selection.
d. frequency dependent selection.
e. natural selection.
E
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The helical shape of the DNA contains major and minor grooves, which assist in the regulating of gene expression
Indicate whether the statement is true or false
An eccentric fragment is one result of crossing-over between a normal chromosome and a chromosome that has undergone what kind of mutation?
A) parametric inversion B) duplication C) reciprocal translocation D) eccentric inversion
The diffusion of water across a plasma membrane is referred to as
A. facilitated diffusion. B. active transport. C. bulk flow. D. osmosis. E. countercurrent flow.
Enzymes increase the rate of a reaction by increasing molecular motion, thereby providing kinetic energy to drive the reaction.
Answer the following statement true (T) or false (F)