unit 3 selective breeding Flashcards

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1
Q

what is selective breeding

A

-breeding paticular animals for particular characteristics
-we choose which species would reproduce and survive so natural selection is affected

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2
Q

what is the process of selective breeding

A

1.from existing stock, select ones with desirable characteristics and breed them together
2.select the best of the offspring and breed them
3.continue this over several generations
4. eventually all offspring will be desirable

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3
Q

examples of desirable characteristics

A

-meat
-products (milk,fur,wool)
-strength and speed
-appearance
plants:fast growing, bigger,fruit,appearance

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4
Q

how long have dogs been selectively breed

A

15000 years

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5
Q

people want dogs for characteristics such as..

A

-hunting- good sight and speed
-hard work- strength and speed
-family and company- good temperament, appearance
-strength and speed
-hearding-smart and good temperament

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6
Q

what is wrong with selective breeding

A

-inbreeding -genetic diease and defeats
-less variety in species so less chance of adapting

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