Which part of the cell cycle does DNA replication occur & how could you show this in the laboratory?

Answer 1

there are effectively 4 stages in the cell cycle, G1, S, G2 then M which mitosis occurs. the G1 stage is when the cell prepares cytoplasmic environment for replication thus contents of RNA and protein increases but DNA contents remain the same, after G1 comes the S phase, that's when DNA replication occur, during S phase, the DNA contents doubles, then into the G2 phase for which the cell prepares for division hence the synthesis of cytoskeletal filaments ready for division. the cell then divides in the M phase, together, the G1, S, and G2 stage is called the interphase. if you want to see DNA replication in the lab, it will be quite difficult because the chromosome decondenses during replication.

my suggestion is using in situ fluoresence hybridisation for one common locus that occurs in all the chromosomes many times such as tandem repeats, when the DNA has replicated, the intensity of fluoresence should double.

Answer 2

a million) Condensed chromatin 2) Daughter cells are the cells produced in cellular divisions: Mitosis or Meiosis. Mitosis produces 2 daughter cells, Meiosis produces 4 daughter cells. 3) Interphase 4) Replication is while DNA makes real copies of itself. this occurs in Interphase 5) In mitosis, the two the parent and daughter cells have 40 six chromosomes. In meiosis, the parent cellular has 40 six chromosomes and the daughter cellular has 23 chromosomes 6) A chromatid is two chromosomes joined by employing the centromere. 7) Adenine, Guanine, Cytosine and Thymine 8) Thymine 9) Cytosine 10) Phosphate group and pentose sugar 11) cellular replictes DNA cellular divides Produces 2 daughter cells that are gentically same to parent cellular.

Answer 3

IT takes place in late pro phase.We could show it in lab by using special dyes to stain them

Answer 4

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