Honors Biology DNA Questions and
Answers Rated A+
What is the role of RNA in relation to DNA?
RNA acts as a messenger, carrying genetic instructions from DNA to the ribosomes for
protein synthesis.
What is the purpose of DNA sequencing?
DNA sequencing determines the exact order of n...
✔✔ RNA acts as a messenger, carrying genetic instructions from DNA to the ribosomes for
protein synthesis.
What is the purpose of DNA sequencing?
✔✔ DNA sequencing determines the exact order of nucleotides in a DNA molecule, allowing for
genetic analysis and research.
How does DNA differ between individuals of the same species?
✔✔ DNA differs in the sequence of its bases, leading to genetic variation and individuality
among organisms of the same species.
What is the function of introns and exons in DNA?
✔✔ Introns are non-coding regions that are removed during RNA processing, while exons are
coding regions that are expressed in proteins.
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, How does DNA methylation affect gene expression?
✔✔ DNA methylation typically represses gene expression by adding methyl groups to DNA,
preventing transcription.
What is the significance of the central dogma of molecular biology?
✔✔ The central dogma describes the flow of genetic information from DNA to RNA to protein,
outlining the process of gene expression.
How do mutations in DNA impact proteins?
✔✔ Mutations can alter the amino acid sequence of proteins, potentially affecting their structure
and function.
What is the difference between a genotype and a phenotype?
✔✔ A genotype is the genetic makeup of an organism, while a phenotype is the observable
physical traits resulting from the interaction of the genotype and environment.
What are plasmids, and how are they used in genetic engineering?
✔✔ Plasmids are small, circular DNA molecules in bacteria used to transfer genetic material
during genetic engineering experiments.
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