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Homology
Monkeys and humans
A)
The Monkeys and the human being both have been
derived from the same ancestor but have evolved in their own different paths. Chimpanzees
evolved to survive in the wild alongside many other animals’ elephants, lions,
zebras, etc. As for humans being evolved from the ape became in a way more civilized
and be able to survive separating humans from the wild.
B)
A homologous trait that both chimpanzees and humans
share is in fact that humans have a tail bone which signals that humans use to
have a tail at some point and Monkeys have an actual tail which they use to
keep balance and be able to sing around between trees having a unique feature.
This homologous trait exhibits a difference between the two because humans have
evolved to get rid of the tail but monkeys still have it because they need it
for survival.
C)
The common ancestor for these two species was,
the CHLCA is useful as an anchor point for calculating single-nucleotide
polymorphism (SNP) rates in human populations where chimpanzees are used as an out-group.
The CHLCA is frequently cited as an anchor for the molecular most recent common
ancestor (MRCA) determination because the two species of the genus Pan, the
bonobos and the chimpanzee, are the species most genetically similar to Homo
sapiens.
Analogies
Octopus and sea star
A)
Both of these animals have the limbs that
evolved separately not from the same ancestor.
B)
Octopus and starfish both have the libs with
suction cups that allow them to attach to any surface.
C)
These limbs are not similar in structure which
signals that they evolved them individually and it was not from the same
ancestor since they evolved independently.
Dear Carlos,
ReplyDeleteI do find the comparison between monkey and human interesting that people still think we evolved from them. But i wont get into that, that topic could get me going for a while. But i really like your choice in Octopus and Sea Star for you Analogous, i see your reasoning. nice work.
Hey Carlos,
ReplyDeleteGreat job on the monkey and human comparison I broke my tailbone (coccyx) in a motorcycle accident years ago and actually researched why I had a tailbone. Really good facts and very informative. Also nice work on the sea star I really liked your comparison of the suction cups and how they have evolved differently.
Hey Carlos,
ReplyDeleteOnce again, you have shown me something different that I would have never thought to wonder about. Very good comparison between ape and humans, and the addition of your picture truly helped to demonstrate how we are interrelated. Your choice of Octopus and Sea Star for your analogous comparison were a good choice, and one I would have not even bothered to compared - as I previously thought they were of nearly the same breed. Though short in your presentation between the Octopus and Sea Star, I am now quite interested in reading more about them, as their differences are quite unique. Nice work.
While I see what your were trying to do with your homologous comparison, it is based upon a misunderstanding. Chimpanzees are not monkeys, they are apes, just like us, and they are have no tail bones, just like us.
ReplyDeleteBut if you get rid of the word Chimpanzee and just replace it with "monkey", you are closer to reality. Monkeys do have tails and some are prehensile, so this would be a good example of homologous traits.
Interesting comparison for your analogous traits. I would have focused the traits on the limb suction cups, which are the actual analogous traits, evolved onto the limbs of the octopus and the sea star due to similar selection pressures. Very interesting example.
You need to be careful about arguing that two structures aren't related because they don't look the same. That is the same problem you encounter when comparing the eagle and the penguin wing superficially. You actually need to know the ancestry to confirm this and a source on that would have been very helpful since I'm not familiar with sea star ancestry in particular.
Otherwise, on the right track.