The diagram below shows part of the cell cycle. Normally, checkpoints exist between each phase that monitor whether a cell is ready to move onto the next phase of cell cycle. An error at which of the following checkpoints would be most likely to lead to uncontrolled cell division and cancer?
the checkpoint that prevents cells from leaving M phase until they are ready
the checkpoint that prevents cells from leaving S phase until they are ready
the checkpoint that prevents cells from leaving G1 phase until they are ready
the checkpoint that prevents cells from leaving G2 phase until they are ready

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.'

above statement is not a true statement about the open ocean because the open ocean has low levels of nutrients. most of the photosynthetic activity on earth occurs in the open ocean within the photic zone. organisms in the deep ocean are exposed to frigid temperatures and total darkness but it does not begin at the low-tide mark.

to this one it would be receptive field