A <span>phenotype is the actual physical characteristic of the gene. Its whatever you see.</span>
Answer is B since it uses strains and differential transformation to see
The answer youre looking for is A
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.
