An actin gene in humans is 92% identical to the homologous actin gene in mice. An actin gene in humans is 80\% identical to the homologous gene in yeast . What does this say about how long ago these organisms had a common ancestor ?

Which of the following is the earliest era of earth's geologic time scale? cenozoic mesozoic precambrian paleozoic

Explain the physiological changes that occur when the hypothalamus stimulates the sympathetic nervous system. you can make a flowchart or a simple step process. be sure to include all chemicals/hormones secreted, glands involved and the functions of each chemical/hormone.

Which of the following is not true of the formation of a bacterial translation initiation complex? a. if-3 binding to gtp is required for the charged trna to associate with the first mrna codon. b. n-formylmethionyl-trnafmet binds in the p site. c. if-1, if-2, and if-3 dissociate upon the 50s subunit binding. d. the 30s ribosome associates with the mrna before the 50s ribosome.