Is The Hippopotamus The Closest Living Relative To The Whale?
Hippos spend lots of time in the water and now it turns out (or researchers argue), they are the closest living relative to whales. It also turns out, the two are swimming in a bit of controversy.
Jessica Theodor, an associate professor in the Department of Biological Sciences at the University of Calgary, and her colleague Jonathan Geisler, associate professor at Georgia Southern University are disputing a recent study that creates a different family tree for the hippo.
That research was published inNature in December 2007 by J. G. M. Thewissen, a professor at Northeastern Ohio Universities College of Medicine, and his colleagues. Thewissen says that whales are more closely linked to an extinct pig-like animal, often known as India’s pig or Indohyus, while hippos are closely related to living pigs.
But this isn’t accurate according to Theodor.
“What Thewissen is saying is that Indohyus is the closest relative of whales – and we agree. Where we think he is wrong, is that he is saying that that hippos are more closely related to true pigs than they are to whales,” says Theodor. “This contradicts most of the data from DNA from the last 12 or 13 years. Those data place hippos as the closest living relative to whales.”
She says Thewissen did not use DNA evidence, instead used fossil evidence alone to create a family tree and reach the conclusion that hippos have more in common with pigs than whales.
“And the reason their tree is so different is simple: by excluding all the DNA information they left out all the data that shows a strong relationship between whales and hippos.”
Theodor’s rebuttal of Thewissen’s work will appear in Nature on Thursday, March 19.
The controversy began after the new fossil of Indohyus, was discovered and written about by Thewissen and his group. This animal lived around 48 million years ago, lived in the water and fed on land.
When biologists study family trees, they traditionally rely on morphology, in other words, the shape of bones. More recently, the DNA revolution means that scientists can use DNA data as another tool to reconstruct family trees, but DNA data can’t be used all the time because DNA is not available for most fossils.
“In order to get the best understanding, researchers combine the two sources of data in a single analysis. But what Thewissen and his group did, was leave one of the major ones out,” says Theodor.
Before the widespread use of DNA data, hippos had been thought to be closely related to pigs, but DNA data show that whales are closely related to hippos. Geisler and Theodor argue that leaving out the DNA data not only ignores important information, it implies that the evolution of swimming evolved independently in hippos and whales, when it may have evolved only once in a common ancestor.
Short URL: http://chandadavis.net/?p=1394
Wow! I can’t believe that whales are the closest living thing to whales! I learned that India’s pig is related to whales and that it died about 48 Million years ago! That is a long time. DNA revolution is something I learned about from this article, it means they use DNA to reconstruct family trees. Although, they can’t use it as much as they want because DNA data isn’t available on most fossils.
It is amazing how technology has brought us in learning and making discoveries of animals!
this is very interesting
Article Summy
1.Thewissen that whales are more closely linked to an extinct pig-like animal, often known as India’s pig or indohyus, while while hippos are closely related to living pigs.
2.When biologists study family trees, they traditiondally rely on mophology in other words, the shape of bones.
3.Those date place hippos as the closest living relative to whales.
4. Hippos spend lots of time in water an now it turns out the are the closest living thing to whales.
5.It also turns out the two are swimming in a bit of controversy.
1. this article is about a debate about if hippos are the closing living relative to the whale.
2.one side said that the hippos are more related to pigs and the other sides says that they are more related to whales than pigs.
3. the “pig” side says that they are more like a extinct pig-like animal called indohyus.
4. the “whale” people used DNA from the last 12 to 13 years to prove that hippos are the closest living relative to the whale.
5.the “pig” people used fossils and a family tree that worked up to a conclusion that hippos are more related to pigs
Conclusion: Both sides of the argument used different evidence and came out with a different solution. So far no one has won this conflict.
Will Cook
8-15-09
4th Period
Some people, like Jessica Theodor and her colleague Jonathan Geisler, are studying a family tree for the Hippopotamus. The tree somehow connects the hippo and the whale because the whale is linked to an ancient pig-like creature and the hippo is said to be a relative of the pig. According to Jessica, this isnt correct. They know that the Indohyus, an ancient pig creature, is relative to whales. Where they don’t beleive Professor Thewissen of Notheastern Ohio University’s theory is where he said that hippos are more relative to true pigs and not whales. Also, they dont believe him because he used fossils to make his family-tree and not true DNA. Now, biologists use DNA as a main source to create family-trees instead of bones. They have learned that DNA is more accurate than morphology which used to be used by biologists. Still, Geisler and Theodor argue with Thewissen that the the DNA left out from bones leave out information. Therefore they are still fighting to see if the hippo is the closest relative to the whale.
1. hippos spend mot of their time in water and are studied to be relatives to whales.
2. thewissen says whales are closerb to an extinct pig like animal.
3. they’ve studied the two animals dna for 12-13 years.
4. they also use fossils to determin the fact.
5. they now no that hippos are closer to whales than pigs.
1. Hippos are the closest thing related to whales.
2. The reason they thing that the hippo is related to the whale is because the whale is related to an extinct pig like animal.
3. Thewissen didn’t use DNA evidence they used fossils to make a family tree and they figured out that hippos are more in common with pigs than wales.
4. When biologist study family trees they rely on the shape of the bones.
5. People thought that hippos where closely related to pigs but, the DNA show that they are also related to whales.
1. Hippos are the closest living relative to whales.
2. Hippos spend alot of time in the water.
3. When biologists study family trees, they traditionally rely on morphology, in other words, the shape of bones.
4. The Indohyus, or India’s pig lived 48 million years ago.
5. The Indohyus lived in the water and fed on land.
HELLO THIS QUESTIONS IS ABOUT THE HIPPOS IS THEY RELATIVE TO ANY OTHER ANIMALS . IS THE HIPPOS STRONGER THEN THE WHALES.
1.Hippos are the closest liveing relative to the whales.
2.You can use fossles instead of using DNA to tell relatives.
3.Some people think that hippos are closer to pigs not whales.
4.Hippos have been alive 48 million years.
5.Before DNA people thought that hippos looked more like pigs so they said that was there closest liveing relative.
1. Scientists argure that hippoes are the closest living relatives to whales.
2.Hippoes have been living for almost 48 million years.
3.Hippoes might be closer to pigs than whales.
4.This contreversy began after they found a Indohyus fossil.
5.DNA shows that hippoes ARE closely related to whales.
Article Summary:
1. Scientists Argue that Hippos are the closest living things to whales.
2. Scientist J. G. M. Thewissen Says that hippos are mostly related to living pigs
3. Jessica Theodor Says that Hippos are mostly related to whales because of the DNA sample she had from a hippo and a whale.
4. Jessica Theodor instead of using Fossil Evidence like J. G. M. Thewissen Used DNA samples so she could determine if hippos were mostly related to whales rather than pigs
5. Now TheWissen and Theodor know that Hippos are mostly related to whales
They say the hippo is the closest thing to the whale .Its accually more like a pig.They used fossil evidence along with the family tree.I dont think the hippo is anything like the whale.
Scientists say hippos are the closest living thing to whales.They used fossils instead of DNA to figure this out.Some people think that hipppos are closer to pigs instead of whales.Biologists use DNA to study the family tree.People thought hippos were closer to pigs but DNa shows that hippos are closer to whales.In conclusion it was talking about how DNA has showed that hippos are closest to whales.
this paragraph is about hippos spending time in the water
Are hippos the kings of the water in africa or is the lions the kings of the water in africa.
1.Hippos may the closest living thing to whales.
2. They think that because hippos and whales spend a lot of time in the water.
3. Scientist have created a family tree by uusing evidence from fossils.
4. Experts think an rare and extinct pig could be releated to a whale too.
5. They get this theorey about the pigs from bone structures.
Artical Summary
- Scientists argue that hippos are the closest living relatives to whales.
- Hippoes have been living for around 48 million years.
-There is a possibility that Hippoes could be closer to pigs than whales.
-The questioning about hippos being more related to pigs or whales began after they found an Indohyus fossil.
-DNA testing shows that hippos are closely related to whales.
In this article, I learned that researchers say that hippos are the closest living things to whales. India’s pig is actually more related to whales, but it died about 48 million years ago. Professor J. G. M. Thewissen used fossil evidence to create a family tree for the hippo. Biologists mainly rely on morphology to study family trees. Morphology is the shape of bones. DNA data also shows that whales are closely related to hippos.
1 Hippos spend most of there time in water. 2, hippos might be closer to pigs than whales. 3, You can use fossils insted of DNA to tell relitives. 4: this contervirsey started after thy found a indohyus fossil. 5: The indohyus lived in the watter but fed on land.
1. Scientists Argue About Hippos being the closest Relative to Whales
2.GSU has made a Diffrent Family Tree for the Hippo
3. Some Scientists things Pigs are closer to hippo’s
4.The Indohyus Pig Fossil was Found and it was 48 Milion years old
5.Whales are the closest relatives to Whales
Article Summary:
Since hippos spend a lot of time in the water, scientists have come to the conclusion that hippos are the closest living thing to whales. Some people say whales are more closely linked to an extinct pig-like animal, often known as India’s pig or Indohyus, while hippos are closely related to living pigs. Before the widespread use of DNA data, hippos had been thought to be closely related to pigs, but DNA data show that whales are closely related to hippos.
Hippos spend most of their lives in water
reserchers found that hippos are related to pigs
but also found that wales are related to an extinced animal like pig
It shows that the line is pig hippo wale
But they only think that hippos and wales were related once in a long line of ancestores
1.) hippos are closest living things related to whales.
2.) Whales are even more closely linked to the extincted pig like animal, Indohyus.
3.)Hippos are also closely related to pigs.
4.)but then hippos are more closely related to pig then whales.
5.)Thewissen did not use DNA for evidence but fossil evidence.
1.Hippoes are the closes relative to the wales.
2.hippoes can run up to 30 miles an hour.
3.Hippoes have been alive for over 48 million years.
4.You can tell their DNA by there bones.
5.Hippoes spend most of their time in the water.
Hippos live in the water but they feed on land. Scientist have just said that this animal is the closest living thing to whales. Other scientist say that the hippo is more closer to some sort of exctinct pig know as a India’s pig. Hippos have been living since about 48 million years.Before DNA research people just said that since hippopotamus looked more like pigs they said that was there closest liveing relative. DNA data has prooven that whales are closely related to the hippoopatumus.
Hippos really are the closest living relative to the whale. People used to think that whales were closely realated to an extinct India pig. They also thought Hippos were closely related to the living pigs. The India pigs lives 48 million years ago. Scientists used DNA data to fin that hippos are closely related to whales.
This article is a debate about hippos are the closest living relative to whales. Hippos might be relatively closer to an extinct pig-like animal than they are whales. You can use fossils instead of DNA to tell relatives between them. The family tree linked pigs closer to hippos more than they are whales because of the fossil evidence. The evolution of swimming remained alone in hippos and whales, when it may have remained only once in a common ancestor.
1. Hippos spend lots of time in the water.
2. They are the closest living relative to whales.
3.The two are swimming in a bit of controversy.
4. J. G. M. Thewissen says that whales are more closely linked to an extinct pig-like animal.
5.When biologists study family trees, they traditionally rely on morphology, in other words, the shape of bones.
I learned that hippos are the closest living relative to whales. Hippos also spend alot of time in the water. I also learned that when biologists study family trees, they traditionally rely on morphology, in other words, the shape of bones. The Indohyus, or India’s pig lived 48 million years ago. The Indohyus lived in the water and fed on land.
Some of the things in that i learned in this article were(1) that whales and hippos are some what realated. (2)Also that hippos are more closley realted to pigs than they are whales. (3)That you can use bones to figure out your family tree, i think thats amazing!!!!!(4)That a whale is also known as Inda’s pig or Indohyus.(5) I think this article is cool because know i know something new about hippos!
1. Scientists Argue About Hippos being the closest Relative to Whales
2. Scientist have created a family tree by uusing evidence from fossils
3. Whales are even more closely linked to the extincted pig like animal, Indohyus.
4. You can tell their DNA by there bones.
5. Hippoes have been living for around 48 million years.
1. Hippos spend lots of time in the water
2.They are the closest living relative to whales
3. They used fossils to figure this out
4.They figured out a family tree
5.The controversy began after the new fossil of Indohyus
1.Hippos spend lots of time in the water and now it turns out (or researchers argue), they are the closest living relative to whales. It also turns out, the two are swimming in a bit of controversy.
2.Jessica Theodor, an associate professor in the Department of Biological Sciences at the University of Calgary, and her colleague Jonathan Geisler, associate professor at Georgia Southern University are disputing a recent study that creates a different family tree for the hippo.
3.That research was published inNature in December 2007 by J. G. M. Thewissen, a professor at Northeastern Ohio Universities College of Medicine, and his colleagues.
4.Thewissen says that whales are more closely linked to an extinct pig-like animal, often known as India’s pig or Indohyus, while hippos are closely related to living pigs.
5.But this isn’t accurate according to Theodor.
Hippos spend alot of time in the water. Jessica Theodor and her colleague Jonathan Geisler, are disputing a recent study that creates a different family tree for the hippo.The wissen says that whales are more closely linked to an extinct pig-like animal, often known as India’s pig or Indohyus.Before the widespread use of DNA data, hippos had been thought to be closely related to pigs, but DNA data show that whales are closely related to hippos.
In his article I learned that hippopotamus are the closest living things to whales. Some scientists say that pigs are closer to hippos than whales are, but most disagree. The scientists that believe that pigs are the true close relative only used fossil evidence to create a family tree. The other scientists, however, used DNA evidence and found that whales are closer to hippos than pigs. I believe the DNA users. This was a very interesting article to read.
1. The hippo is related to the whale.
2. They did not use fossil things to find more out about the hippo.
3. It is not accurate according to Theodor.
4. When biologists study trees, they rely on morphology.
5. Since hippos live in the water a lot they are the closest living things to whales.
1.Hippos spend lots of time in the water and now it turns out (or researchers argue), they are the closest living relative to whales. It also turns out, the two are swimming in a bit of controversy.
2.Jessica Theodor, an associate professor in the Department of Biological Sciences at the University of Calgary, and her colleague Jonathan Geisler, associate professor at Georgia Southern University are disputing a recent study that creates a different family tree for the hippo.
3.That research was published inNature in December 2007 by J. G. M. Thewissen, a professor at Northeastern Ohio Universities College of Medicine, and his colleagues.
4.Thewissen says that whales are more closely linked to an extinct pig-like animal, often known as India’s pig or Indohyus, while hippos are closely related to living pigs.
5.But this isn’t accurate according to Theodor.
1. this summary is about hippos in the water 2.)and they are the closest things to whales 3.)hippos lived over 48 years 4.) you can tell their dna by their bones 5.) scientists discovered a family tree about hippos
1. Hippos spend lots of time in the water.
2. Not only they spend lots of time in the water, they are the closest living realatives to whales.
3.Thewissen says hippos are more related to exctinct, pig-like animals.
4. But it is not accurate according to Theodor.
5. According to Theodor, a scientist, Thewissen, also a scientist, did not use the DNA theory, he used a fossil theory instead.
Wow. I never new that hippos are the closest living thing to whales! The only other relative to the whale was the Indian pig and it died out 48 million years ago. It also turns out that hippos are related to pigs. There is controversy though, that hippos are more related to pigs than whales. Which is right? You be the judge.
1.Thewissen that whales are more closely linked to an extinct pig-like animal, often known as India’s pig or indohyus, while while hippos are closely related to living pigs.
2.When biologists study family trees, they traditiondally rely on mophology in other words, the shape of bones.
3.Those date place hippos as the closest living relative to whales.
4. Hippos spend lots of time in water an now it turns out the are the closest living thing to whales.
5.It also turns out the two are swimming in a bit of controversy.
1.Hippos are the closest living thing to a whale.
2.Whales are like extinct pigs.
3.The DNA are very alike.
4.When scientists look at the family tree they look at their morphology.
5.The fossils of hippos look the same as whales.
1. Hippos spend most of theere time in water.
2. Reserchers say that hippos are the clostest reletive to the the whale.
3. A scientist thinks that indian pigs are more closer to hippos.
4. Indian pigs died out 48 million years ago.
5.The scientists have studied pigs,hippos and whales DNA for 12-13 years.
1. Scientists argue about the relations between Whales and hippos.
2.One group of scientist debate that the hippos are more related to pigs
3.Another group says that they are more related to whales than pigs.
4. The way scientist come to these conclusions is because of the D.N.A in the animal’s bones.
5. The D.N.A has been proven that hippos are mostly related to whales.
1) hippios spend lots of time in the water
2) the are the closes living felitive to the the whales
3)the two are swiming in a bit of controversy
4)Jessica Theodor, is an associate professor in the Department of Biological Sciences at the University of Calgary
5)the are a hole diffferent family tree than the whales
I have learned that hippos are the closest living relative to whales.
hippos are closer related to pigs and the extenct pig like creature indohyus
hippos spend alot of time in the water
the indohyus died out about 48 million years ago
hippos are a whole different family than whales
It is being debated whether hippos are more closely related to live pigs or whales. Jessica Theodore is saying that the hippo is more closely related to the whale than the pig, and she received her research from DNA. While J. G. M. Thewissen, who came up with the results that the hippos were more closely related to live pigs, got their results from fossil research. Now, Theodore is saying that the reason J. G. M. Thewissen got the results they got was because they left out the DNA research which shows how closely the whale and hippo are related. Although the hippos are not as close related to the whale as a Indohyus, extinct pig, their will be testing performed to find the true answer to this controversy. The results will be available in Nature soon.
This article is about If hippopoatums is the closest living relative to a whale.
Hippos are strongly related to living pigs.
Thewissen did not use DNA evidence.
The reason the tree came out different frome theirs was Thewissen excluded DNA.
Thewissen’s work will be shown in nature on thursday, March 19.
In this article, I learned that researchers say that hippos are the closest living things to whales. India’s pig is actually more related to whales, but it died about 48 million years ago. Hippos spend alot of time in water. You can use fossils instead of DNA to tell relatives between them. The family tree linked pigs closer to hippos more than they are whales because of the fossil evidence.