Life on Earth Worksheet Essay

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Backdrop: There are 3 extant types of elephant: Elaphas maximus (Asian elephants), Loxodonta africana (African elephants), and Loxodonta cyclotis (African forest elephants).


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Their taxonomic hierarchy is as employs: 2 . Collect an image of each and every species. You can expect to submit these types of as a part of the assignment. (see full assignment instructions) three or more. Looking at these pictures, could you think of virtually any EXTINCT pet or family pets that might be an in depth relative of modern elephants? List it/them listed below. If you know the dimensions of the scientific term (genus and species) then you can definitely put that.

If you aren’t quite sure, just give the normal name. Big 4. At this point think about EXTANT taxa. Discover 2 pets that you might anticipate to be the closest LIVING relative to the elephants.

List it/them below. If you know the dimensions of the scientific brand (genus and species) then you can definitely put that. If you aren’t quite sure, just give the common name. Conceivable Relative A Manatees five.

For the closest EXTANT relatives, what characteristic(s) of this animal or perhaps its habitat led you choose it since probable nearest relative? (consider geographic location, size, anatomy, behavior etc). Be particular. Characteristics of Animal A Now to the science The actual link listed below to read about some of the extinct family of elephants 6th.

How were the phenotypes of old proboscideans different from those of extant elephants? The ancient proboscideans differ from the ones from extant elephants because they may have multiple pairs of molars and premolars, they do not have tusks, and so they retain teeth on the higher jaw. several. Based on the information in the web-site, where performed the early proboscideans evolve?

The first proboscideans started out Africa. Even more derived proboscideans (not historic, but not extant either) as well had a different geographic distribution than elephants today: almost eight. Which localities seem most surprising and why? North and South usa because these kinds of locations had been once full of these animals, such as mastodons, while having most of the animals originate from the other side worldwide. 9. Identify 4 synapomorphies that are distributed between Most of these extinct and extant taxa.

Look at the. pdf file named Afrotheria. The phylogeny described with this paper will be based upon molecular info (similarities in DNA sequences) 10. Depending on that phylogeny, write inside the sister taxon (taxon A) to Proboscidea.

Give the formal name. Taxon A or Sirenia Proboscidea 11. Compose in the taxon (taxon B) that is sis to the clade composed of (Proboscidea + Taxon A). Give formal brand 12.

Execute an internet seek out these two taxa and find out their common titles. What are their common brands? Describe each. The common name to get Sirenia can be Sea Cow. Sea deer are totally aquatic, herbivorous mammals that appear fat.

They have forelimbs used for guiding and a tail employed for paddling. The most popular name for Hyracoidea will be hyraxes. Hyraxes are well-furred animals with short tails and have poor internal temperatures regulation.

The thing that was your thought/reaction upon finding what these creatures are? My thought reaction was how can family pets that seem nothing as well be comparable to an hippo if that they visually seem different. Believe it or not, there are morphological (phenotypic) commonalities as well as diet and behavioral similarities between all of these taxa. BEFORE molecular data was available, experts already suspected that these teams were strongly related. The DNA data only helped to confirm the relationships.

We’ll do more on that in a minute. 13. Search the web to find at least two nonmolecular synapomorphies between each of your modern taxa and the elephants: (be particular! ) Pet #1 name Rock Hyraxes Rock Hyraxes are furry and have the bottoms of the foot with huge, soft pads that are kept moist. Manatees have paddle like flippers and a snout.

16. Which with the features you listed are more inclined to survive in the fossil record? Explain why.

Most likely to survive in the fossil record may be the snout because it consists of the bones of the jaw which can be very best for becoming fossils. 16. Go to page 409.

Dots suggest the base match (A, C, T or perhaps G) is the same as is listed inside the taxon that’s at the top (this saves printer ink! ). Now compare the sequences intended for the Photography equipment elephant as well as the Asian elephant in just the very best row of page 409. How many molecular distinctions do you see in the collection shown? You will discover 8 molecular difference in the sequence.

Just how many molecular differences do you count between your African elephant and the hyrax? There are 10 molecular dissimilarities between the Photography equipment elephant and the hyrax. 17. Based on anatomy alone (without the molecular evidence), might you have suspected that the animals in photos above represented the closest living family members of elephants? Why or why not?

Truthfully, based on the anatomy only, I would not have guessed the fact that animals represent close relatives of the elephants because of the physical anatomical feature they have. The majority of animals can have identical anatomy with slight variations that bring about their success in an environment. Initially, I thought that the pets had similar characteristics because of normal selection and adaptation with their environment not because of their very own common antecedent, ascendant, ascendent,.

This shows how molecular evidence can really help in discovering what animals belong in what lineages.


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