Cynthia observed a cell with a pair of sister chromatids moving toward a given pole as a single unit and another cell with sister chromatids moving to opposite poles. what did she infer from her observation?
(a)the first cell is in anaphase i, and the second cell in anaphase ii.
(b) the first cell is in metaphase ii, and the second cell in metaphase i.
(c) the first cell is in anaphase ii, and the second cell in anaphase i.

the answer is c.) there is a warm front in region a and a stationary front in region b.

ans.

dna fingerprinting is defined as a process that determines the dna characteristics of an individual. these dna characteristics are unique among individuals as their fingerprints, so it is known as dna fingerprinting.

steps of dna fingerprinting includes extraction of dna from sample, amplification of dna, restriction digestion of amplified dna, and then analysis of dna by gel electrophoresis, respectively.

thus, the next step performed by the scientist is 'to cut the amplified dna (obtained by polymerase chain reaction) by restriction enzymes that cleave the dna into fragments and their analysis.'