Chromosomes can be condensed into compact structures, visible with the light microscope, but usually only
A. while the nuclear pores are open.
B. while the DNA is being copied into RNA.
C. after the cell is dead.
D. while the proteins are being assembled.
E. during cell division.
Answer: E
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In gene regulation and control, induction can be defined as the:
a. mechanism of genetic control in which genes are induced only when the substrate to be degraded by enzymatic action is present. b. uptake of free DNA from the environment and recombination with the recipient's homologous DNA. c. mechanism of genetic control in which genes are not transcribed and therefore are not expressed in the presence of those target products in sufficient supply. d. change of the bacterial genotypes through the exchange of DNA from one cell to another.
The metric system is the measurement system of choice for
a. scientists. b. most countries in the world. c. most peoples of the world. d. all of the above.
An organism's realized niche is always smaller than its fundamental niche
Indicate whether the statement is true or false
________ genes violate Mendel's principle of independent assortment
A) Codominant B) Linked C) Recessive D) Pleiotropic