Through meiosis,
a. alternate forms of genes are shuffled.
b. parental DNA is divided and distributed to
forming gametes.
c. the diploid chromosome number is reduced
to haploid.
d. offspring are provided with new gene
combinations.
e. all of these occur.
E
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The areas between the protein-rich parts of a chromosome and the telomeres are called
A) submetacentric. B) subtelomeres. C) subcentromeres. D) subchromatin.
Which state in the U.S. contains chaparral regions?
a. Texas b. Washington c. California d. Florida e. New Mexico
The fact that salt dissolves in water is best explained by the
A) slightly charged nature of water molecules. B) ionic nature of water molecules. C) hydrophobic nature of the water. D) hydrophobic nature of salt. E) polar nature of water molecules.
The plant alkaloid ricin is nontoxic inside castor beans, but becomes active when digested by an animal. The toxic form of ricin kills by
A. inactivating ribosomes needed for translation. B. inactivating the animal's immune system. C. releasing cyanide. D. over stimulating the animal's heart rate. E. binding to RNA polymerase.