A synovial joint is a joint in which is highly common and moveable. They are covered with cartilage and connected by ligaments, lined with a membrane. <span>
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I think the answer is Specialized cells!
Answer:
d
Explanation:
prokareyote or bacteria does not have a nucleus.
The effect of geographic isolation is that the two populations are subjected to different selection (pressures) and geographic conditions. The conditions in the two areas, if different, will produce different alleles in that species and will be selected for, where genetic differences will gradually accumulate between the two different populations.
In time, enough genetic differences will occur so that the two populations will no longer interbreed. Then, by definition, they have become different species.
