Artificial Selection and Breeding

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Last updated 8:37 PM on 10/22/25
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6 Terms

1
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when did human plant domestication begin

~ 12,000 years ago in Middle East/Fertile Crescent

2
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when did ant plant domestication begin and what plant

~ 25 - 30 mya

domesticated fungal cultivars in Central/North America

3
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what happened to grain size under pre-domestication cultivation

grain size increased

4
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what is the breeders equation and what do the parts stand for

R = h²S

r = response to selection

  • difference between mean of population before selection and mean of offspring

h2 = narrow - sense heritability

  • proportion of trait variation → additive genetic effects

S = selectional differential

  • difference between mean of population and mean of population that reproduces

5
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what was the silver fox experiment

selection towards tameness

successful after 6 generations

6
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what are the domestication syndromes

white spots on head

floppy ears