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☆☆☆☆☆The embryonic stage is a typical stage in development for animals that reproduce sexually, and it has stood the test of evolution in several species.
cladistics
A population becomes separated by different environments and do not reproduce with one another.
Genetic drift is change in allele frequencies due to random chance events.
Two types are the Founder effect and the Bottleneck effect.
The founder effect is when a subset of a population goes to a new are where there are no other of that same species.
The bottleneck effect is when a large population is reduced to a small population.
Genetic drift decreases variation in a population and has a greater effect on a smaller population than a larger one.
A hypothesis is a suggestion of a way to explain something. If the hypothesis is tested and confirmed, it can advance to the status of theory. The conclusion of testing a hypothesis will be either that the hypothesis is confirmed, or it is not confirmed.
A theory supported by evidence (apex)
hiii
No, it's exactly the other way around: natural selection causes adaptation.
Adaptation and speciation through natural selection
