Question: *It is possible for a mutation to occur and yet not alter the end product of translation if

Answer: the new codon encodes the same amino acid.

Question: Which of the following is not a base found in DNA?

Answer: Uracil

Question: Protein coding genes specify the production of _____ as their immediate product.

Answer: mRNA

Question: Once replication in a DNA molecule is complete, each new DNA molecule contains

Answer: one old strand and one new strand.

Question: The sequence of DNA differs among individuals within a species. This is the basis for

Answer: variations in phenotypes.

Question: A gene affects an organism’s phenotype by controlling

Answer: protein production

Question: All cells in an organism contain a full copy of that organism’s DNA. Your ears do not produce digestive enzymes because

Answer: different genes are expressed in different parts of an organism

Question: The difference between different alleles of a gene is

Answer: their DNA sequence

Question: The two strands of a DNA molecule are held together by _____ bonds between their base pairs.

Answer: hydrogen

Question: When one base is changed to another at a single position in the DNA sequence of a gene, a(n) _____ mutation has occurred.

Answer: substitution