Neo-darwinism
Fixism
Neutralism
Puntuated equilibrium
Evolutionary development biology
Endosimbiosis theory
Darwinism
Lamarckism
Most mutations are neither benefitial nor harmful for the individuals that have them, so natural selection does not affect them.
Some genes act as switches for other gene groups during embrionic development.
The reasons behind the variation within a species are mutations, genetic recombination and sexual reproduction.
The necessity creates the organ. The acquired characteristics are transmitted to offsrping.
The evolutionary process does not always take place in a slow gradual way. Instead in many cases new species are form rapidly.
Individuals of a species that have more favourable characteristics survive more.
Eukariotic cells originated as a result of two different types of bacteria joining together.
Living things do not change, species always stay the same