While hiking through the mountains during Olivia D @Saylor.org Evolutionary

Question 14 / 120: While hiking through the mountains during the fall, you notice that many of the elk are grouped with one male to many females, and it appears that those males with more points and larger racks tend to have more females in their group than males with fewer points and smaller racks. Is this an example of natural selection or sexual selection, and why?

A Natural Selection, because these males are reproducing more, which is adaptive, and their rack
size could be influenced by abiotic and/or biotic factors such as forage availability

B Sexual Selection, because these males are reproducing more, which is adaptive, and their rack
size could be influenced by abiotic and/or biotic factors such as forage availability

C Natural selection, because if these males mate with each of these females, then the males with
more points and larger racks will be reproducing at a greater rate and this is an example of
selection that may not necessarily be adaptive and is determined by the individual elk

D Sexual selection, because if these males mate with each of these females, then the males with
more points and larger racks will be reproducing at a greater rate and this is an example of
selection that may not necessarily be adaptive and is determined by the individual elk

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Evolutionary Biology & Ecology BIO102

Author:

Dr.Olivia D'AmbrogioLecturer

Saylor.org

USA

Access: Public Instant Grading

Attribution: Olivia D'Ambrogio Introduction to Evolutionary Biology and Ecology. (The Saylor Academy 2014), http://www.saylor.org/courses/bio102/ (Accessed 16 May, 2014). License: Creative Commons BY-NC-ND

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