Answer: Mutation
Explanation:
A mutation is a random change in a cell's genetic code due to a variety of causes. The change can be small and insignificant, or it can be major. Mutations can be passed onto offspring through reproduction, thus increasing the genetic variation within a population.
B. 25%
C. 40%
D. 75%
Answer:
c.
Explanation:
DNA is a molecule that controls cellular activity by directing the synthesis of proteins.
The nucleus contains the cell's DNA and directs the synthesis of ribosomes and proteins. Found within the nucleoplasm, the nucleolus is a condensed region of chromatin where ribosome synthesis occurs.
Thus, DNA is a molecule that controls cellular activity by directing the synthesis of proteins.
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b. friction
c. gravity
d. pressure