ATAR Notes: Forum

VCE Stuff => VCE Science => VCE Mathematics/Science/Technology => VCE Subjects + Help => VCE Biology => Topic started by: cypriottiger on October 19, 2010, 11:21:31 pm

Title: Dog breeds and evolution
Post by: cypriottiger on October 19, 2010, 11:21:31 pm

ok the question is from lisachem 2005, and follows:
Figure 2 shows several breeds of dog that have been domesticated from wolves (pic is just several dog breeds)
The breeds of dog shown are the result of:
A divergent evolution
B adaptive radiation
C artificial selection
D gene cloning





I chose A just thinking of all the choices they'd given me it was the best option. answer is C which i find arguable seeing as selective breeding of certain dogs only began about 100 years ago, so how is it relevant to evolution from a wolf ancestor? i even disagree with my answer A because dog breeds are not of different species as they can interbreed, so what is the best answer of this/method of solving?

Title: Re: Dog breeds and evolution
Post by: happyhappyland on October 20, 2010, 08:54:22 am

Wouldnt it be C because divergent evolution suggest speciation has occured

Title: Re: Dog breeds and evolution
Post by: shivesh.varmaxD on October 20, 2010, 10:47:57 am

It looks like the keyword in the stem was 'domesticated' which was supposed to lead you to artificial selection.
Probably not the strongest question in my opinion.