Imagine that a mutation in the gene encoding the cholera toxin was made. this mutation affects the a-subunit, preventing it from interacting with any host protein. (a) would the toxin be able to enter into the intestinal epithelial cell? (b) would the toxin be able to cause diarrhea?

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.'

the growth of the plants is affected by the heat of the light. what is the student doing?