Biology Unit 4: Dogs Decoded GRQ's
why has using a morphological/archaeological approach to hypothesize a. what Canis species is most related to dogs b. when dogs were domesticated proven difficult?
a. the huge difference in dog breeds makes it hard to narrow the morphological traits to just one common ancestor b. dogs change in domestic life was drastic compared to wolves, so its hard to pin when exactly the wolf features change
in the nature vs nurture experiment with dog pups and wolf pups, what behavioral differences did the wold ups exhibit as they grew older? what do the results of this experiment suggest about the influence of genetics vs environment and upbringing on where dogs come from
dogs seem to wonder what the raiser was doing while wolves were missing this trait wolves were interested only in their activities wolf pups have genetic disposition determining behavior even with equal nurturing
what factors may have favored domestication of wolves by early human hunters? what advantages did this relationship provide for humans and wolves/dogs
humans could have raised and tamed/trained wolves to help hunters in earlier human species so that they could get food to survive easily in turn, humans gave care, food, and shelter to the domestic wolves
describe the left gaze bias experiment. How dos the let gaze bias differ when dogs encounter humans faces compared to other dogs? how does this compare with humans the encounter other human faces what other hypothesis were the scientists testing with this experiment
scientists tested to see if dogs portrayed left gaze bias like humans when presented with pictures of human or dog faces the bias is looking at eh right side of ones face at first site dogs do this with humans but not other dogs humans look at each other with left gaze bias they want to test if the dogs recognize these expression similar to humans in direction of gaze
in the experiment with the foxes, what trait was selected for when breeding one group of foxes? what trait selected for in the other group of foxes? what does the outcome of this experiment suggest about where dogs come?
they bred the tamest foxes together and the most aggressive foxes together with generations bred, the furthest out generations were more tame or aggressive
describe the cross fostering experiment the scientists conducted with the two groups of foxes. what happened to the aggressive fox pups in this experiment? how do these results support previous findings
when aggressive cubs were given tame mothers the cubs. behavior did not change corroborating that nurture didn't influence behavior of the wild cub
are wolves and dogs the same species? why?
yes dogs are a type of wolf because they can breed together and produce fertile offspring domestication hasn't impacted this ability and they also share characteristics
