Artificial Selection

Question 1

define Artificial selection

Answer 1

intentional selection and breeding of plant or animal with desirable characteristics for use of humans

Question 2

why is it different to natural selection?

Answer 2

human choice not nature
efficient crops or animals but not adapted
less biodiversity

Question 3

explain domesticated animal species

Answer 3

genetic variation among animal population
human breeds individuals with desirable characteristic
over generations to retain the characteristic
eg neotony in dogs

Question 4

explain domesticated crop species

Answer 4

cross plant organisms with desirable traits
or genetic engineering

maize: teosinte seeds with desirable characteristics seeded to eliminate undesirable characteristic, alleles desired higher in frequency until in all plants - new species
(les kernel cover, more kernel retention, larger erect ear)