Search over 10,000 free study notes

Mutations in individuals leads to variation in a population of a species. Some individuals have characteristics that makes them better suited to their environments , so they are more likely to survive and re...

Starting is the hardest. The introduction is crucial to grab the admission tutor's attention and thinking of a good line might take a while, and stop you from even starting on your personal statement (PS), s...

Rather than the furry creature, in chemistry a mole is a unit used to measure substances. Its equivalent to 6x10 23 atoms, the number of carbon atoms in 12g of carbon. To find a mole of a substance we use th...

Alleles are different forms of a gene. For example, given the gene for eye colour there would be many different colours available. People with brown eyes would have the allele of the eye colour gene coding f...

Bacteria are small living microorganisms that vary in shape and size. Similar to plants cells they contain a cell wall, however, they do not have a nucleus. Instead their genetic information is carried in et...