Purple flowers are dominant to white flowers in peas. If a purple flowered plant and a white flowered plants are crossed multiple times and 154 offspring are produced - 78
with white flowers and 76 with purple flowers. If you perform a chi-squared test, what
would be the number of degrees of freedom for this cross?

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.'