https://padlet.com/yahirponce/aze1o6p5wu8a en-us 2016-05-11 18:51:53 UTC 2016-05-11 18:58:47 UTC hello@padlet.com yahirponce https://padlet.com/yahirponce/aze1o6p5wu8a/wish/110411601 Us as humans actively choose which traits should be passed onto offspring. Humans have used selective breeding long before Darwin's Postulates and the discovery of genetics.]]> 2016-05-11 18:52:29 UTC https://padlet.com/yahirponce/aze1o6p5wu8a/wish/110411601 yahirponce https://padlet.com/yahirponce/aze1o6p5wu8a/wish/110411705 Selective breeding began about 10,000 years ago, after the end of the last Ice Age. ]]> 2016-05-11 18:52:49 UTC https://padlet.com/yahirponce/aze1o6p5wu8a/wish/110411705 yahirponce https://padlet.com/yahirponce/aze1o6p5wu8a/wish/110411884 Hunter-gatherers began to keep flocks and herds and to cultivate cereals and other plants.]]> 2016-05-11 18:53:19 UTC https://padlet.com/yahirponce/aze1o6p5wu8a/wish/110411884 yahirponce https://padlet.com/yahirponce/aze1o6p5wu8a/wish/110412045 This process of domestication was probably stimulated by a combination of human population pressure and environmental stress caused by a rapid change in climate.]]> 2016-05-11 18:53:50 UTC https://padlet.com/yahirponce/aze1o6p5wu8a/wish/110412045 yahirponce https://padlet.com/yahirponce/aze1o6p5wu8a/wish/110412160 The second type of selective breeding is known as controlled natural selection.]]> 2016-05-11 18:54:15 UTC https://padlet.com/yahirponce/aze1o6p5wu8a/wish/110412160 yahirponce https://padlet.com/yahirponce/aze1o6p5wu8a/wish/110412268 A third approach, known as selection experiments, is conducted to determine how strong natural selection is in the wild. (Experiments)]]> 2016-05-11 18:54:39 UTC https://padlet.com/yahirponce/aze1o6p5wu8a/wish/110412268 yahirponce https://padlet.com/yahirponce/aze1o6p5wu8a/wish/110412994 There are over 400 breeds of dog in the world and all are maintained as pure-bred stocks through selective breeding, which aims to maintain a closed genetic lineage.]]> 2016-05-11 18:57:20 UTC https://padlet.com/yahirponce/aze1o6p5wu8a/wish/110412994 yahirponce https://padlet.com/yahirponce/aze1o6p5wu8a/wish/110413155 Traits are often referred to as being dominant or recessive. Just like humans, dogs have two copies of each gene (one inherited from mum and one from dad), but the letters making up each gene can be slightly different. ]]> 2016-05-11 18:58:04 UTC https://padlet.com/yahirponce/aze1o6p5wu8a/wish/110413155