Evolution of the Horse by https://padlet.com/diana_bello/oeiwn3lzm4xm en-us 2017-06-14 03:47:02 UTC 2025-11-02 22:49:48 UTC hello@padlet.com Evolution of the Horse diana_bello https://padlet.com/diana_bello/oeiwn3lzm4xm/wish/176345743 V.I.S.T
Variation- A mutation of the DMRT3 gene altered the way that a horse trots, shifting its gait from the diagonal-pair trot to the same-side amble. Discovered in 2012
Inheritance-Sex selection is highly desirable for horse breeders. Sperm can be sorted by X and Y chromosomes, improving the sex selection through unreal fertilization. Flow cytometry measures DNA in cells and it sort sperm, but it is also time-consuming and it damages sperm, leading to great losses during the procedure.
Selection-
]]> 2017-06-14 03:50:36 UTC https://padlet.com/diana_bello/oeiwn3lzm4xm/wish/176345743 Migration diana_bello https://padlet.com/diana_bello/oeiwn3lzm4xm/wish/176425260  58 million years ago, horses first appeared in North America. 10 million years ago, horses began to move across the Bering Strait, and numbers began to decrease in the North American region. 10 thousand years ago, horses disappeared from North America]]> 2017-06-14 15:57:09 UTC https://padlet.com/diana_bello/oeiwn3lzm4xm/wish/176425260 Cites diana_bello https://padlet.com/diana_bello/oeiwn3lzm4xm/wish/176425480 http://alternativehorsehealth.org/Evolution_of_the_horse.php
http://chem.tufts.edu/science/evolution/horseevolution.htm

http://www.nature.com/news/horse-gait-traced-to-single-mutation-1.11308]]> 2017-06-14 15:58:37 UTC https://padlet.com/diana_bello/oeiwn3lzm4xm/wish/176425480 Genetics diana_bello https://padlet.com/diana_bello/oeiwn3lzm4xm/wish/176599595 Over 55 million years ago Hyracotherium was the size of a small dog with 3 toed feet and white spots. Now we see the modern horse and see how much it changed over the years ]]> 2017-06-15 20:40:49 UTC https://padlet.com/diana_bello/oeiwn3lzm4xm/wish/176599595 Sexual Selection diana_bello https://padlet.com/diana_bello/oeiwn3lzm4xm/wish/176602104 Like many mammals, Horses produce sexually and also fight for a mate.]]> 2017-06-15 21:18:04 UTC https://padlet.com/diana_bello/oeiwn3lzm4xm/wish/176602104 diana_bello https://padlet.com/diana_bello/oeiwn3lzm4xm/wish/176602848 2017-06-15 21:31:41 UTC https://padlet.com/diana_bello/oeiwn3lzm4xm/wish/176602848 Parallel Evolution diana_bello https://padlet.com/diana_bello/oeiwn3lzm4xm/wish/176603043 Horses, have parallel evolution for their traits, they are related to the rhino because 55 million years ago they were 3 toed. ]]> 2017-06-15 21:36:01 UTC https://padlet.com/diana_bello/oeiwn3lzm4xm/wish/176603043