Answer:
B
Explanation:
Uracil replaces thymine so when you translate it you put each bases pair so for RNA uracil would replace adenine and guanine would replace cytosine.
Answer: No
Explanation: It is beneficial if the animals that are disadvantageous doesn't reproduce so it doesn't discredit natural selection. The traits in which variation is occured are more suitable for organism to live and reproduce in the environment are preserved and are passed from generation to generation.
However, natural selection effects limited number of progeny.
Hydrochloric acid is found in the stomach