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Review the structure and replication of DNA, including key concepts and mechanisms.
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Learn about the discovery and properties of the genetic code and how to use the codon table in this Khan Academy article.
Lesson 5: DNA and DNA replication. DNA questions. DNA structure and function. Nucleic acids. DNA. Molecular structure of DNA. Antiparallel structure of DNA strands. Leading and lagging strands in DNA replication. Speed and precision of DNA replication.
Learn about eukaryotic gene transcription, from DNA to mRNA, including important processing steps.
Learn how scientists use messenger RNA, reverse transcriptase, and DNA polymerase to generate a complimentary DNA sequence. Explore how this sequence is amplified, sequenced, and added to an online database, enabling easy access to the DNA sequence of any protein.
How the sequence of nucleotide bases (As, Ts, Cs, and Gs) in a piece of DNA is determined.
DNA serves as the molecular basis of heredity through replication, expression, and translation processes. Replication creates identical DNA strands, while transcription converts DNA into messenger RNA (mRNA).
Retroviruses, like HIV, have a unique replication process combining lytic and lysogenic elements. They enter cells through direct fusion and use reverse transcriptase to create complementary DNA (cDNA) from their RNA. Integrase integrates viral DNA into the host genome, forming a provirus.
DNA (deoxyribonucleic acid) is the molecule that carries genetic information in living organisms.