DNA & RNA, DNA Replication and Protein Synthesis and Mutations

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What is DNA?

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DNA (Deoxyribonucleic Acid) is the molecule that carries the genetic instructions for life. It is composed of two strands that coil around each other to form a double helix.

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What is RNA?

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RNA (Ribonucleic Acid) is a single-stranded molecule that plays a crucial role in the synthesis of proteins. It is involved in translating the genetic information from DNA into proteins.

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What is the process of DNA replication?

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DNA replication is the process by which a cell makes an exact copy of its DNA before cell division. It involves unwinding the double helix and synthesizing new complementary strands.

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What are mutations?

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Mutations are changes in the DNA sequence that can lead to alterations in traits. They can occur naturally or be induced by environmental factors.

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How do mutations affect protein synthesis?

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Mutations can change the amino acid sequence of a protein, potentially altering its function or rendering it nonfunctional.

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What is a point mutation?

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A point mutation is a change in a single nucleotide base pair in the DNA sequence. It can be classified as substitution, insertion, or deletion.

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What is a deletion mutation?

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A deletion mutation occurs when one or more nucleotide pairs are lost from the DNA sequence, which can lead to a shift in the reading frame during protein synthesis.

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What is tRNA?

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tRNA (transfer RNA) is a type of RNA that carries amino acids to the ribosome during protein synthesis and matches them to the corresponding mRNA codons.

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What is mRNA?

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mRNA (messenger RNA) is a type of RNA that carries the genetic information from DNA to the ribosome, where proteins are synthesized.

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What is rRNA?

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rRNA (ribosomal RNA) is a component of ribosomes, which are the cellular structures where protein synthesis occurs.