DNA, RNA, Protein Synthesis and Mutations Review

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What is DNA?

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DNA (Deoxyribonucleic Acid) is the molecule that carries the genetic instructions for life, 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 by carrying genetic information from DNA to the ribosome.

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What is protein synthesis?

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Protein synthesis is the process by which cells generate new proteins, involving two main steps: transcription (copying DNA to mRNA) and translation (reading mRNA to assemble amino acids into proteins).

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What are mutations?

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Mutations are changes in the DNA sequence that can lead to alterations in the structure and function of proteins, potentially resulting in genetic disorders or variations.

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What is a point mutation?

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A point mutation is a change in a single nucleotide in the DNA sequence, which can result in a different amino acid being incorporated into a protein.

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What is a deletion mutation?

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A deletion mutation occurs when one or more nucleotides are removed from the DNA sequence, potentially leading to a frameshift and altered protein synthesis.

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What is an insertion mutation?

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An insertion mutation happens when one or more nucleotides are added to the DNA sequence, which can disrupt the reading frame and affect protein production.

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What are codons?

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Codons are sequences of three nucleotides in mRNA that correspond to specific amino acids or stop signals during protein synthesis.

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What is Chargaff's Rule?

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Chargaff's Rule states that in DNA, the amount of adenine (A) is equal to thymine (T), and the amount of cytosine (C) is equal to guanine (G).

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What is transcription?

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Transcription is the process of copying a segment of DNA into mRNA, which carries the genetic information needed for protein synthesis.