B-valine,histidine,threonine,phenylalanine
Anaphase I begins when the two chromosomes of each bivalent (tetrad) separate and start moving toward opposite poles of the cell as a result of the action of the spindle. Notice that in anaphase I the sister chromatids remain attached at their centromeres and move together toward the poles.
Because there is little leaching.
TRNA (translate rna) and mRNA(messenger rna).
