Genetic drift
Genotype and Phenotype
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Convergence, Natural Selection, 'Survival of the Fittest'
Convergent evolution occurs when two distinct species that have a very distant relationship develop the same characteristic as each other through means independent of one another. My example is the octopus and human eyeballs. Our last common ancestor was a flatworm about 750 mya, which is a long time to evolve apart from each other. Despite the fact that we are terrestrial beings, and octopuses are subterrainian beings, we both evolved the same type of eyeball: a camera eye with a lens, photreceptors, an iris, a retina, a cornea, and vitreous body. Both of our reasonings for developing camera eyes was to have a motion-based vision that takes in light easily, as both species are predators or hunters that must capture our food (as far as meat goes), but the evolutionary distance between is is so grand that our hunting needs vary in other aspects of our characteristics. Octopuses must be able to swim very quickly to catch up to their fishy prey, while our prey is mainly on land...
I LOVE your illustrations they are so funny and creative and you explain the concept very well!
ReplyDeleteYour drawings are always so fun, simple, and easy to understand!!! Such a fun way to learn and reinforce a topic! Job well done, I love the chat bubbles!
ReplyDeleteYour explanations are very educational which makes your adorable and funny illustrations that much better. Very good job!
ReplyDeleteI really like your drawing it it a great way to explain the concept!
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