Causes of speciation<span>. In the fruit fly example, some fruit fly larvae were washed up on an island, and </span>speciation<span> started because populations were prevented from interbreeding by geographic isolation. ... However, </span>speciation<span> might also happen in a population with no specific extrinsic barrier to gene flow.</span>
Watson and Crick described it well in their published work on DNA and its structure. ... This understanding of the structure of DNA is particularly important because it led to the realisation that if there is an adenine on one side of the pair, then the other base must be thymine.
They will eventually start to die and become extinct.
<span>The three types of names are: chemical, which describe the actual chemical composition of the medication, generic, which is the name that all versions of the medication would go by without being sold by a specific company, and trade, which is the specific brand name that a medicine will have when sold by one company.</span>
