the difference between chimeric and fratenal twins are chimeric twins are formed when 2 fertelized eggs/early embros fuse together.each keeps its own character and the resulting organism is a mixture of tissues fraternal twins are when 2 eggs are released and different sperm fertilizes each egg.
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Nurqistina afiqah
10/18/2011 02:01:22 am
Fraternal twins also referred to as "non-identical twins",A chimera is an ordinary person or animal except that some of their parts actually came from their twin or from the mother.
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cian hodgins
10/18/2011 02:26:04 am
Chimera: In medicine, a person composed of two genetically distinct types of cells. Human chimeras were first discovered with the advent of blood typing when it was found that some people had more than one blood type. Most of them proved to be "blood chimeras" -- non-identical twins who shared a blood supply in the uterus. Those who were not twins are thought to have blood cells from a twin that died early in gestation. Twin embryos often share a blood supply in the placenta, allowing blood stem cells to pass from one and settle in the bone marrow of the other. About 8% of non-identical twin pairs are chimeras.
Many more people are microchimeras and carry smaller numbers of foreign blood cells that may have passed from mother across the placenta, or persist from a blood transfusion. In vitro fertilization (IVF) is also contributing to the number of human chimeras. To improve success rates, two or more embryos are placed in the uterus so women who have IVF have more twin pregnancies than usual. More twins mean more chimeras.
Fraternal twin: A twin who have shared a common uterine environment with its sibling. Fraternal twins are due to the fertilization of two different ova by different sperm.
Basalt is formed when magma cooled down and solidified.Obsidian is produced when lava extruded from a volcano cools rapidly with minimum crystal growth. Pumice is a volcanic rock that is a solidified frothy lava. It can be formed when lava and water are mixed.
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afiqah ruslan
10/25/2011 01:58:12 am
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afiqah ruslan
10/25/2011 01:59:15 am
there made from magma/lava :)
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erica sherlock
10/25/2011 08:28:17 am
made up from magma and lava
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cian hodgins
11/6/2011 01:41:23 am
made from magma and lava
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