The retina of the eye extends anteriorly only to a wavy line called the;
a. fovea centralisb. conjunctivac. uvead. ora serrata

a. fovea centralis

Explanation:

fovea centralis  is a thin, central pit composed of closely packed cones in the eye. It is located in the center of the macula lutea of the retina.  It is also the center of the eye's sharpest vision and the location of most color perception.

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.'