Biology, 07.11.2019 00:31 ericgalo808
In the treated sample, human glioblastoma (brain cancer) cells were grown in tissue culture in the presence of inhibitor-producing umbilical cord stem cells. in contrast, control sample glioblastoma cells were grown in the absence of stem cells. to get a "snapshot" of the phase of the cell cycle each cell was in at the end of 72 hours, the cell samples were treated with a fluorescent chemical that binds to dna. next the samples were run through a flow cytometer, an instrument that records the fluorescence level of each cell. computer software then graphed the number of cells in each sample with a particular fluorescence level.
Answers: 2
Biology, 22.06.2019 10:40
Which of the following factors would not contribute to allopatric speciation? a) a population becomes geographically isolated from the parent population.b) the separated population is small, and genetic drift occurs.c) the isolated population is exposed to different selection pressures than the ancestral population.d) different mutations begin to distinguish the gene pools of the separated populations.e) gene flow between the two populations is extensive.
Answers: 2
Biology, 22.06.2019 11:00
At which point is crust neither created nor destroyed? island chain mid-ocean ridge divergent boundary transform boundary
Answers: 2
Biology, 22.06.2019 14:00
What could happen if two base pairs on a strand of dna or switched
Answers: 3
In the treated sample, human glioblastoma (brain cancer) cells were grown in tissue culture in the p...
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