5 (b) selective breeding
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4 Terms
how can selective breeding develop plants with desired characteristics
increase crop yield
how selective breeding can develop animals with desired characteristics
high meat yield
increase the number of offspring
why are organisms selectively bred
to develop the best features
maximum yield of product
good health and disease resistance
in animals, temperament, speed, fertility, good mothering skills
in plants, attractive flowers, nice smell
basic process involved in selective breeding
from existing stock, select the ones which have the best characteristics
breed them with each other
select the best of the offspring, and breed them together
continue this process over several generations, and the desirable trait gets stronger and stronger
in farming, this will give the farmer gradually better yields
Note 
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