The Cow Bos Primigenius (Which Is Bred for Meat and Milk)

question 21

Multiple Choice

The cow Bos primigenius (which is bred for meat and milk) has a smaller brain and larger eyes than closely related wild species of ungulates. These traits most likely arose by ________.

• A) natural selection, because these traits evolved in the population over time
• B) natural selection, because these traits were not consciously selected by humans
• C) artificial selection, because changes in these traits co-occurred with human selection for high milk output and high muscle content
• D) artificial selection, because these animals differ from their close relatives and common ancestor