You have discovered a strain of mutant yeast cells that divides normally at 30°C but cannot enter M phase at 37°C. You determine that its mitotic cyclin and mitotic Cdk can form a normal M-Cdk complex at both temperatures. Which of the following temperature-sensitive mutations could NOT be responsible for the behavior at 37°C ? a. inactivation of an enzyme that ubiquitinates M cyclin b. inactivation of a protein kinase that acts on the mitotic Cdk kinase c. a decrease in the levels of a transcriptional regulator required for producing M cyclin d. inactivation of a phosphatase that acts on the mitotic Cdk kinase g

d) center of the mid-ocean ridge

give brainleysest

sinserly,

steckh986

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.'