How does crispr target the gene of interest?

CRISPR is mechanism tapped and modified from bacterial defense mechanism to form a tool to edit DNA in a genome. CRISPR is composed of palindromic sequences interspersed with foreign spacer DNA. The spacer DNA is transcribed into crRNA that is guided by a tracrRNA to the invading helical foreign DNA. The tracrRNA recruits Cas9 protein which helps cut the exogenous DNA.

oceans

indian ocean

pacific ocean

atlantic ocean

arctic ocean

southern ocean

desert perennials often survive by remaining dormant during dry periods of the year, then springing to life when water becomes available. most annual desert plants germinate only after heavy seasonal rain, then complete their reproductive cycle very quickly.