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In our last installment about chromosomes, we discussed mitosis, the key process that maintains the proper chromosome number in somatic cells. But what happens when organisms want to reproduce? In organisms that reproduce sexually, or through the combination of genetic…
The nucleus is a dense organelle that contains the genetic material of a cell. How dense? The human genome is around 3 billion nucleotides and the average length of a nucleotide is 0.6 nanometers, so stretched out the DNA in…
As we mentioned in an earlier blog post, a cell is essentially a drop of a thick, watery substance (cytoplasm) surrounded by a layer of fats (cell membrane). The cell membrane separates the inside of the cell from the outside…
Meet the luminescent Aequorea victoria. This jellyfish lights up the eastern Pacific Ocean with a green fluorescent signal. Producing this signal is a two steps process. First a blue light is created through an interaction between released calcium (Ca2+) and…
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