Alysha+S.

__Biology 122 Wiki Post Outline GENETICS__

(baby in womb)

The gift of life is an incredible thing. But unfortunately, for some couples, biologic children is not an option. There are plenty of walls blocking the way to biological children. One of them being the lack of both sexes in a relationship. Until recently, biological children between two women was thought to be impossible. But for nearly a decade now, British scientists have studied a new way for conception. This process, incredibly, does not involve sperm from a male testicle.

(bone marrow) The idea is that bone marrow would be taken from female donors and transformed into sperm through the use of chemicals and vitamins. The female sperm would be placed in a pastry dish along with the egg and conception would happen like such and injected into the womb to grow.

(sperm fertilizing an egg)

(How this process could work)

media type="youtube" key="cF6jXkj_J64" width="560" height="315"

References

http://discovermagazine.com/2007/jul/babies-from-bone-marrow

http://www.explorestemcells.co.uk/stem-cells-same-sex-reproduction.html

http://humrep.oxforjournals,org/content/15/1/83.full.pdf

http://www.fertilityhandbook.com/pages/reproductive-health-overview/fertilization-and-pregnancy.php

http://www.testocreams.com/blog/testosterone-levels-determined-birth/

http://www.123rf.com/photo_27277934_stock-vector-blood-cell-in-red-bone-marrow.html

__Biology 122 Wiki Post EVOLUTION__

Human Evolution is a very lengthy process of continuous change by which people originated from apelike ancestors. it is believed that human evolution began nearly six million years ago in Africa. These African primates are now extinct. Aside from this unfortunate factor, scientists have been able to track their adaptations using data found in fossils, etc.

"Southern ape" living between 3.8 and 2.9 millions years ago. "Upright man" which lived from 1.7 million to 200 000 years ago. Neanderthal man, lived for 100 000 years before dying out around 30 000 years ago. Homo sapiens appeared about 200 000 years ago.

From skeletons to teeth, early human fossils have been found of more than 6,000 individuals. With the rapid pace of new discoveries every year, this impressive sample means that even though some early human species are only represented by one or a few fossils, others are represented by thousands of fossils. From them, we can understand things like:

-how well adapted an early human species was for walking upright -how well adapted an early human species was for living in hot, tropical habitats or cold, temperate environments -the difference between male and female body size, which correlates to aspects of social behavior -how quickly or slowly children of early human species grew up.



References

[]

[]

[]

[]

[]

[]