Explain how codon bias and GC content can be used to detect horizontal gene transfer within a genome
What will be an ideal response?
nswer: If an organism rarely uses a particular amino acid and one gene sequence has significantly more codons for the otherwise rare amino acid, this codon bias can be used to infer horizontal transfer of the gene. GC content may also be significantly different in a gene that has been transferred horizontally compared to the average GC content of the majority of the genome.
You might also like to view...
The media used to successfully grow Francisella tularensis must contain cysteine
Indicate whether this statement is TRUE or FALSE.
Chlamydia infection can lead to cervicitis, salpingitis, and pelvic inflammatory disease.
Answer the following statement true (T) or false (F)
An absorption spectrum indicates the relative effectiveness of different wavelengths of light
__________________ Indicate whether the statement is true or false.
Information flow in biological systems is necessary for negative or regulative feedback to operate. Which of these examples does NOT involve flow of information providing feedback?
A) Heat receptors send signals to promote sweating. B) Low blood sugar causes the liver to convert starch to sugar to be released in the blood. C) Drought kills many trees. D) Bacterial genes for breaking down lactose are activated in the presence of lactose.