Domanda del libro di testo
Why are the recombinants produced from an Hfr x F⁻ cross rarely, if ever, F⁺?
762
views
Ch. 8 - Genetic Analysis and Mapping in Bacteria and Bacteriophages
Klug10th EditionEssentials of GeneticsISBN: 9780135588789
Non è quello che usi tu?Cambia libro di testoScegli un libro di testo diverso
TOC.tableOfContents
- Ch. 1 - Introduction to Genetics16
- Ch. 2 - Mitosis and Meiosis28
- Ch. 3 - Mendelian Genetics37
- Ch. 4 - Modification of Mendelian Ratios53
- Ch. 5 - Sex Determination and Sex Chromosomes32
- Ch. 6 - Chromosome Mutations: Variation in Number and Arrangement37
- Ch. 7 - Linkage and Chromosome Mapping in Eukaryotes36
- Ch. 8 - Genetic Analysis and Mapping in Bacteria and Bacteriophages24
- Ch. 9 - DNA Structure and Analysis38
- Ch. 10 - DNA Replication29
- Ch. 11 - Chromosome Structure and DNA Sequence Organization22
- Ch. 12 - The Genetic Code and Transcription36
- Ch. 13 - Translation and Proteins27
- Ch. 14 - Gene Mutation, DNA Repair, and Transposition34
- Ch. 15 - Regulation of Gene Expression in Bacteria22
- Ch. 16 - Regulation of Gene Expression in Eukaryotes37
- Ch. 17 - Recombinant DNA Technology27
- Ch. 18 - Genomics, Bioinformatics, and Proteomics30
- Ch. 19 - The Genetics of Cancer21
- Ch. 20 - Quantitative Genetics and Multifactorial Traits37
- Ch. 21 - Population and Evolutionary Genetics45
Klug10th EditionEssentials of GeneticsISBN: 9780135588789Non è quello che usi tu?Cambia libro di testo
Tutti i libri di testo
Klug 10th EditionCh. 8 - Genetic Analysis and Mapping in Bacteria and BacteriophagesProblema 10
Klug 10th EditionCh. 8 - Genetic Analysis and Mapping in Bacteria and BacteriophagesProblema 10Capitolo 8, Problema 10
The bacteriophage genome consists of many genes encoding proteins that make up the head, collar, tail, and tail fibers. When these genes are transcribed following phage infection, how are these proteins synthesized, since the phage genome lacks genes essential to ribosome structure?
Guida verificata passo dopo passo1
Understand that bacteriophages are viruses that infect bacteria and rely on the host's cellular machinery to reproduce.
Recognize that although the phage genome encodes proteins for its structure (head, collar, tail, tail fibers), it does not encode ribosomal RNA or ribosomal proteins, which are essential components of ribosomes.
Recall that ribosomes are the molecular machines responsible for translating mRNA into proteins, and these are provided by the bacterial host cell.
Conclude that after the phage injects its genome into the bacterial host, the host's ribosomes translate the phage mRNAs into phage proteins.
Therefore, the synthesis of phage structural proteins depends on the host bacterium's ribosomes and translation machinery, which the phage genome does not encode.
Risposta video verificata per un problema simile:
Questa soluzione video è stata consigliata dai nostri tutor come utile per risolvere questo problema.
Durata del video:
2mConcetti chiave
Ecco i concetti essenziali che devi comprendere per rispondere correttamente alla domanda.
Bacteriophage Genome and Gene Encoding
Bacteriophages have genomes encoding structural proteins like head, collar, tail, and tail fibers. These genes provide instructions for making viral components but do not include genes for the host's cellular machinery, such as ribosomes.
Video consigliato:
Percorso guidato
06:04
Mapping Bacteriophages
Host Machinery Utilization by Viruses
Viruses, including bacteriophages, rely on the host cell's molecular machinery to replicate and produce proteins. Since phages lack ribosomal genes, they hijack the host bacterium's ribosomes and enzymes to translate their mRNA into proteins.
Video consigliato:
Percorso guidato
03:44Plaques and Experiments
Transcription and Translation in Phage Infection
After infection, phage DNA is transcribed into mRNA using host RNA polymerase. This mRNA is then translated by host ribosomes into viral proteins, enabling the assembly of new phage particles within the bacterial cell.
Video consigliato:
Percorso guidato
07:58Translation initiation