When comparing genomes from different species, scientists are often interested in the genome density, or the number of genes per
number of nucleotides in the genome. genome density can be calculated from the size of the genome and the number of genes. what is the gene density of the human genome? calculate your answer in genes per mb (mega base pairs, or 1 million base pairs)?
The human genome density ranges between 12-15 genes per Megabase pairs. This is because humans have approximately 2000 genes in a total of approximately 3 billion base pairs. However, some primitive organisms have an even larger gene density
than humans. An example is bacteria with gene densities ranging between 100 –
500 genes/Mb. Gene density is therefore
not a good characteristic in determining
the complexity of an organism.
A solution is isotonic to a cell if it has the same Concentration of dissolved particles as the cell. Water molecules move in and out of the cell at equal rate, so the cell size remains the same.
