In the gradual speciation<span> model, species diverge slowly over time in small steps while in the punctuated equilibrium model, a new species diverges rapidly from the parent species. The two key influencing factors on the change in </span>speciation rate<span>are the environmental conditions and the population size.</span>
The subculture with an affinity for motorbikes and leather is known as Rockers. The rival group, those that prefer fashion and music, is known as Mod. These subcultures are of British origin and are divided on the basis of their tastes.
Rockers are also referred to as Leather Boys, given how much they enjoy wearing and using leather items.
Answer:
Sutton and Boveri published independent papers proposing what we now call the chromosome theory of inheritance.
