Computer programs that search for ORFs tend to overestimate the number of functional genes in a genome
One method to validate that a potential gene is functional is to see if the same gene is present in two related species, such as mice and humans. A more stringent criterion is that the shared gene is present in a syntenic region of the chromosome. What is a syntenic region?
What will be an ideal response?
Ans: Although there are a lot of chromosomal rearrangements that shuffle the location of homologous genes among related species, genes that are functionally homologous tend to be located sandwiched between other homologous genes, because of genetic linkage. This relationship is called synteny.
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A) NADP and channel proteins B) xylem membranes and channel proteins C) sodium/potassium pumps and xylem membranes D) ATP, transport proteins, and a proton gradient
The strand of DNA for a particular gene that is copied by the RNA polymerase to form mRNA is called the ________ strand.
A. copy B. transcription C. template D. leading
Which animals serve as a reservoir for cholera-causing bacteria?
a. aquatic birds b. copepods c. fish d. humans e. algae
Loci that are far apart:
A. have less attraction than close loci. B. influence the phenotype to a lesser degree than loci that are close together. C. have a higher recombination rate than loci that are close together. D. exhibit a recombination frequency of greater than 50%. E. always segregate together in meiosis.