Tuesday, November 13, 2007

humans involvement with selective breeding

About Me
Samantha Zakaras
I am an Olathe North student in Student Naturalist, and I'd like to show you mankind's involvement with selective breeding.

Selective breeding in domesticated animals is the process of a breeder developing a cultivated breed over time, and selecting qualities within individuals of the breed that will be best to pass on to the next generation.
Humans use selective breeding to improve a specific species to help the human race, like improving chickens body mass for more meet or to enlarge the eggs for more to eat. We also improve cows production of milk.


But the selective breeding can cause the chickens legs to be unable to grow as rapidly as its body, causing it to be limp. Isn't that cruelty?
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These People selectively bred these chickens to be featherless so they wouldn't have to worry about the heat in the sheds as much.

As man keeps doing more research and testing our biotechnologists and life scientists keep making food better for us. And we have more jobs for scientists. But is this really better for us or are we effecting mankind too? Some will argue that we are striping religon from sociaty and teaching the wrong things to our children, but are we?

Also purebred animals are apart of selective breeding.
Purebreds, also called pure breeds, are cultivated varieties or cultivars of an animal species, achieved through the process of selective breeding. When the lineage of a purebred animal is recorded, that animal is said to be pedigreed.
But purebred is not Thoroughbred, which refers exclusively to a specific breed of horse.



pros and cons
or through wedsites are:
genetics and evolution
Modern
chicken farm
Darwin

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