Dogs case study

Question 1

farm fox experiment

Answer 1

foxes bred for sole trait of friendliness to human
result: domesticated dog-like traits
this means that dogs differentiate from wolves due to friendliness to humans

Question 2

microevolution

Answer 2

change over time

Question 3

there’s a lot of dog cranial diversity…why?

Answer 3

all 4 mechanisms of change

Question 4

founder effect

Answer 4

high genetic frequencies of founders’ genes

high incidence of particular phenotype

Question 5

bottlenecks

Answer 5

high incidence of particular genotype bc of a catastrophic event

Question 6

variation in dogs canid and carnivores

Answer 6

similar amount of variation in all three groups meaning that there is a shared pattern of developmental variation meaning artificial selection on dogs hasnt changed HOW skulls develop just WHAT they develop into

Question 7

dog breed establishment

Answer 7

genetic drift played a big role and the accumulat of mutations allows for morphological divergence

weak modualrity

domestication doesn change way new variation is generated

Question 8

brachycephalic dogs

Answer 8

flat faced dog

Question 9

why are some dogs brachycephalic?

Answer 9

missense mutation in BMP3 gene