What is the "2R hypothesis?" What evidence is there for it?
What will be an ideal response?
Ans: This is the hypothesis that the early vertebrate genome underwent two rounds of whole-genome duplication (polyploidization). Regions of the vertebrate genome that are found in four copies (representing two rounds of duplication) provide evidence for this. Although the percentage of regions appearing four times is low, the millions of years of evolution may have obscured the clear homologies between duplicates.
You might also like to view...
Translation ends when a stop codon is at the ____ site, allowing a ____ to bind there
a. P; release factor b. A; terminator tRNA c. E; terminator tRNA d. A; release factor e. P; terminator tRNA
Which component in the cell membrane restricts the passage of water-soluble substances?
a. sterols b. phospholipid c. protein d. glycolipids
The location of an allele on a chromosome is called a locus
1.True 2.False
What gland and hormone control the release of cortisol from the adrenal cortex?
What will be an ideal response?