Is when a person has 47 chromosomes instead of the normal 46. Kids with down Syndrome as a very noticeable appearance. They can vary from mild to sever. The head maybe smaller than normal and abnormally shaped. The inside of the eye may be rounded instead of pointed. They normally have a decrease in muscle tone from birth.
I believe it is sad for this to happen to anyone but they cant help it. It is interesting how it works in the body. How it affects the appearance of the body. They are shorter and takes them longer to learn how to do things. They make fundraisers for the kids and people that have down syndrome. I think it is nice to do what we can to help those people have what other people have.
https://health.google.com/health/ref/Down+Syndrome
Sunday, May 9, 2010
Monster colossal squid is a slow non-fearsome predator
The world's largest invertebrate is not a fast and voracious predator as previously thought, say scientists. The colossal squid, a creature once linked to maritime myth and feared as a sea monster, is really a slow drifting animal that ambushes unwitting prey. That conclusion was reached by studying the physiology and feeding habits of other deep sea species and scaling up to the colossal squid's huge size. Researchers reveal their findings in the Journal of the Marine Biological Association of the United Kingdom. The colossal squid (Mesonychoteuthis hamiltoni) is thought to roam in the deep waters of the Southern Ocean. Rarely seen alive or dead, little is known about its way of life. Estimates vary, but it is thought to measure 15m in length with a large dome-shaped mantle. It also has long tentacles and arms containing swivelling hooks used to grapple and maul prey. A recent specimen studied had eyes approximately 27cm (11in) across, believed to be the largest animal eye yet discovered.
though little is known about this creature everyone can say that it is truly a ginormous animal and I'm sure many would be shocked to find out that it is a harmless one. The myth's of the great sea monster the "kraken" have astonishingly proven themselves true only of the size of course but for the fearsome reckless nature that is this mythical beast more research shall have to be done to prove it. But for now its safe to say that even with its size and stealthy way of attack it truly is a harmless creature.
works sited
"BBC - Earth News - Monster Colossal Squid Is Slow Not Fearsome Predator." BBC NEWS | News Front Page. Web. 10 May 2010.
chromosomes
They can only be seen under a microscope. They come in pairs and are connected at the centromeres. The shorter one of the 2 arms is the p arm and the longer one is the q arm. The kerotype for a female is 23 pairs of homologous chromosomes.
-Female 22 pairs on autosomers.
-Female 1 pair of X chromosomes.
-Male 22 pairs of autosomers.
-Male 1 X and 1 Y chromosomes.
I believe it is cool how the chromosomes can work your body. They deal so much with what your physical appearance is. For example if your missing chromosome 21 you are going to have a disease called down syndrome. For anything to go wrong with the form of your chromosomes you could really have a disability. This is nothing anyone can help so you shouldnt make fun of them. I think it is an amazing thing to know how these things work on humans for them to be so small and can have such a big impact on the life of someone.
http://users.rcn.com/jkimball.ma.ultranet/BiologyPages/C/Chromosomes.html
-Female 22 pairs on autosomers.
-Female 1 pair of X chromosomes.
-Male 22 pairs of autosomers.
-Male 1 X and 1 Y chromosomes.
I believe it is cool how the chromosomes can work your body. They deal so much with what your physical appearance is. For example if your missing chromosome 21 you are going to have a disease called down syndrome. For anything to go wrong with the form of your chromosomes you could really have a disability. This is nothing anyone can help so you shouldnt make fun of them. I think it is an amazing thing to know how these things work on humans for them to be so small and can have such a big impact on the life of someone.
http://users.rcn.com/jkimball.ma.ultranet/BiologyPages/C/Chromosomes.html
Huge asteroid Pallas visible from Earth
http://www.msnbc.msn.com/id/36988063/ns/technology_and_science-space/
This week the big asteroid Pallas reached opposition. Pallas is the brightest satr in the sky. Being opposite of the Earth's sun it made it possible for the skywatchers to see it through telescopes. pallas' is closely related with the discovery of the first asteroid centuries ago. Pallas is the second largest asteroid known. It is around 326 miles in diameter, it is this big because of the high density level.
It's pretty cool how we can see this ateroid from such a far distance away. I never really knew that an ateroid would be the brihtest star in the sky. The only thing I want to know is how these massive ateroids form and how it got so big.
This week the big asteroid Pallas reached opposition. Pallas is the brightest satr in the sky. Being opposite of the Earth's sun it made it possible for the skywatchers to see it through telescopes. pallas' is closely related with the discovery of the first asteroid centuries ago. Pallas is the second largest asteroid known. It is around 326 miles in diameter, it is this big because of the high density level.
It's pretty cool how we can see this ateroid from such a far distance away. I never really knew that an ateroid would be the brihtest star in the sky. The only thing I want to know is how these massive ateroids form and how it got so big.
Neanderthal genes 'survive in us'
Many people alive today possess some Neanderthal ancestry, according to a landmark scientific study. The finding has surprised many experts, as previous genetic evidence suggested the Neanderthals made little or no contribution to our inheritance. Between 1% and 4% of the Eurasian human genome seems to come from Neanderthals.But the study confirms living humans overwhelmingly trace their ancestry to a small population of Africans who later spread out across the world. The most widely accepted theory of of human origins known as the "out of Africa theory" which states that all ancestors of all living humans originated in Africa some 200,000 years ago. A relatively small group of people then left the continent to populate the rest of the world between 50,000 and 60,000 years ago. Which could be definite proof of people actually originating from Africa.
i believe that our ancestors could have came from Africa for the simple reason that they were hunter's and gathers coming across the land across the land bridges created during the ice age. Not to mention that Neanderthals were the first people which means that they had to have had some influence on the genetics of some people in day. and it just goes to show that they have proof to back it up so it must be a little bit true.
Works Cited
"BBC News - Neanderthal Genes 'survive in Us'" BBC NEWS | News Front Page. Web. 09 May 2010. .
Saturday, May 8, 2010
Genetic changes show up in people with PTSD
http://www.sciencenews.org/view/generic/id/58820/title/Genetic_changes_show_up_in_people_with_PTSD
New findings show that people with PTSD (Post Traumatic Stress Disorder) develop genetic changes. These findings were reported online on may 3 in the Proceedings of the National Academy of Sciences. While differences are clearly evident between those with and without PTSD, it is unclear whether these changes have any effect on the disorder. Specifically the study showed that "the people with PTSD showed less methylation in several immune system genes and more methylation in genes linked to the growth of brain cells." Researchers are optimistic that this discover may lead to an effective treatment of PTSD. However more studies and research are needed before a definitive answer can be given.
This makes alot of sense to me. PTSD is a "deep" disorder but I never expected that it could actually affect people on a genetic level. That's pretty scary. But it shows just how harmful a traumatic experience can be. It would be wonderful if a good treatment could come out of this. Perhaps we could finally bring peace to those who suffer the disorder, especially our veterans.
New findings show that people with PTSD (Post Traumatic Stress Disorder) develop genetic changes. These findings were reported online on may 3 in the Proceedings of the National Academy of Sciences. While differences are clearly evident between those with and without PTSD, it is unclear whether these changes have any effect on the disorder. Specifically the study showed that "the people with PTSD showed less methylation in several immune system genes and more methylation in genes linked to the growth of brain cells." Researchers are optimistic that this discover may lead to an effective treatment of PTSD. However more studies and research are needed before a definitive answer can be given.
This makes alot of sense to me. PTSD is a "deep" disorder but I never expected that it could actually affect people on a genetic level. That's pretty scary. But it shows just how harmful a traumatic experience can be. It would be wonderful if a good treatment could come out of this. Perhaps we could finally bring peace to those who suffer the disorder, especially our veterans.
Chimps may be aware of others’ deaths
http://www.sciencenews.org/view/generic/id/58652/title/Chimps_may_be_aware_of_others%E2%80%99_deaths
Two new studies show that chimpanzees may be aware of the concept of death and may recognize when others have died. These studies were reported in the April 27 issue of Current Biology. Behaviors that suggest this have been exhibited in both wild and captive chimps. The studies point to the behaviors of other chimps leading up to and after the death of a captive chimp. The surviving chimps refused to lay in the spot where the chimp was laying when she died for several days. They also were less active and did not eat as much. The studies also pointed to two wild mother chimps who carried their dead babies for 68 and 19 days respectively.
Chimps are very intelligent creatures. It makes a lot of sense that they would be able to recognize and be aware of the concept of death. The sense of denial exhibited by the two mothers is reminiscent of behaviors shown by humans. They don't want to admit what has happened so they continue on as if it never occurred at all. It is also against the nature of the mothers to abandon their infants. So that adds another even stronger attachment to the equation.
Two new studies show that chimpanzees may be aware of the concept of death and may recognize when others have died. These studies were reported in the April 27 issue of Current Biology. Behaviors that suggest this have been exhibited in both wild and captive chimps. The studies point to the behaviors of other chimps leading up to and after the death of a captive chimp. The surviving chimps refused to lay in the spot where the chimp was laying when she died for several days. They also were less active and did not eat as much. The studies also pointed to two wild mother chimps who carried their dead babies for 68 and 19 days respectively.
Chimps are very intelligent creatures. It makes a lot of sense that they would be able to recognize and be aware of the concept of death. The sense of denial exhibited by the two mothers is reminiscent of behaviors shown by humans. They don't want to admit what has happened so they continue on as if it never occurred at all. It is also against the nature of the mothers to abandon their infants. So that adds another even stronger attachment to the equation.
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