chuinhen Posted June 25, 2006 Share Posted June 25, 2006 http://edition.cnn.com/2005/HEALTH/conditions/11/16/pdg.gender.selection/index.html A sample of sperm was spun in a centrifuge. The spinning separates the Y sperm that creates a boy from the X sperm that creates a girl. The Y sperm was used to fertilize Beth's egg. SO .. which sperm will have a lower mass ??? The one with X or Y Link to comment Share on other sites More sharing options...
Dr. Dalek Posted June 25, 2006 Share Posted June 25, 2006 SO .. which sperm will have a lower mass ??? The one with X or Y The one with Y. The Y chromasome is much smaller than the X chromasome. Link to comment Share on other sites More sharing options...
ecoli Posted June 25, 2006 Share Posted June 25, 2006 I believe they also did this with a magnetic field... not sure how though. Link to comment Share on other sites More sharing options...
Martin Posted June 26, 2006 Share Posted June 26, 2006 here are two methods explained using pictures http://www.washingtonpost.com/wp-srv/nation/daily/graphics/sexselection_121404.html one uses a dye (that stains chromosomes) a laser (the XX is bigger so it glows more) a mild static electric charge applied to the desired type of sperm passage between charged plates to get a stream of the desired type the other method uses in vitro where you let them grow until they have 8 cells or so and then examine one cell to see what the gender is I know there are other methods too, like centrifuge, but only have this link that explains these two methods Link to comment Share on other sites More sharing options...
chuinhen Posted June 26, 2006 Author Share Posted June 26, 2006 http://www.in-gender.com/cs/blogs/gender_selection_news/archive/2006/1/13/5342.aspx There's no dispute that the X chromosome is bigger than the Y chromosome. But the sex chromosome is only one of the 23 chromosomes carried by a sperm -- in total, an X sperm carries only 2.9% more genetic material than a Y sperm. As you can see, the difference isn't that great. Link to comment Share on other sites More sharing options...
Nevermore Posted June 26, 2006 Share Posted June 26, 2006 Great enough to seperate them. Link to comment Share on other sites More sharing options...
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