Biology 1001A Lecture 6: BIOLOGY LECTURE 6.docx

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jadebeaver77

15 May 2012

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Transduction involves virus carrying dna into cells virus kills host cells in order to get host. Transformation is when the cell dies and releases its guts and other cell eat these guts and take up their dna. Dna from 2 different parent in close proximity. Enzymes nick 2 close strands and exchange (dna back bones are broken and exchange on both inside and outside) Results in dna that are recombine and are different from either were before. Recombination event when the cutting and pasting of dna happens. We need other event on the other side of b+ allele for it to end up on part of the recipient chromosome. 2 recombination event required to exchange the 2alelles one on either side of b+ allele. Can send copy of themselves into plasmids (they don"t literally jump just copy themselves) Some dna sequences that are mobile some jump and the other send copy to another target sequence.

Related Questions

Genetic Recombination in Bacteria by Transduction For each of the following statements about bacterial genetic recombination by phage transduction, answer: "True" or "False".

1) In generalized transduction, the transducing phage carries a random piece of DNA from a donor host cell.

2) A phage that infects several species of bacteria might be able to transfer DNA from one to another.

3) A specialized transducing phage transfers specific host DNA sequences along with the phage DNA.

4) In recombination by transduction, the bacterial cell that donates the DNA is killed by a virus.

5) A phage is a bacterium that infects and takes over human cells.

ultramarinewallaby658

Which of the following statements is not true about genetic recombination:

1) Recombination involves the induction of double stranded breaks
2) Recombination involves strand invasion from the homologous chromosome
3) Recombination involves the formation of a double stranded region that involves DNA strands from two different homologs

4) The DNA strands in the heteroduplex region will always be exactly complementary to each other.

5) All statements about recombination are true

sangriamouse849

1. List some of the proteins that are involved in homologous recombination

2. Some viruses have a lysogenic lifecycle. What are these viruses called in bacteria when they integrate into the bacterial chromosome? What are they called if the host cell is eukaryotic (you may have to look that one up)? What is an âattachment siteâ? If the virus enters the lytic cycle, which two enzymes are involved in the excision of the DNA from the host cell chromosome? Which of them was also involved in the insertion?

3. What are two examples of site-specific recombination

tealraven495

Biology 1001A Lecture 6: BIOLOGY LECTURE 6.docx

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