The attachment of methyl radicals to genes helps regulate which property?
A: gene coding system

Which phrase does not describe asexual reproduction in organisms?
A: requires two parents

The average rainfall in Nevada is about 7 inches per year. The most likely reason for the low amount of rainfall is the
A: lack of moisture in the air.

Which of the following is least likely to change from a solid state to a liquid state when heat is applied?
A:
paper