Focus on the evolution of the horn size in the Bighorn sheep population from 1950 to present. Explain how selection was a factor
in the evolution of horn size since 1950. Question 10 options: The hunters chose to harvest the sheep with the larger horns.
Only smaller horned sheep survived and reproduced, so, over time the population had smaller horn size.
The female sheep chose the males with the largest horns, so only sheep with large horns reproduced. As a result, sheep currently have larger horns than 70 years ago.
The mutation for smaller horns happened so the sheep would not be harvested by hunters, and now that mutation spread through the population.
Selection was not a factor in the evolution of horn size since 1950.
The hunters chose to harvest the sheep with the larger horns. Only smaller horned sheep survived and reproduced, so, over time the population had smaller horn size.
Explanation:
The trophy hunting (the bigger the better) on bighorn sheep has caused artificial evolution. The human selection (and killing) of sheep with large horns has led to the survival of sheep with smaller horns. It is a form of <em>artificial evolution </em>because in <em>natural evolution </em>bigger horns means to be better armed.
Production of more food--the system allowed for more food to be produced which fed the workers in an industrial economy.
The 'four-field system' rotates crops between the 4 fields no longer needing to keep one empty because one of the crops would replenish the field with nutrients while the others take nutrients away from the fields. <span />
The greatest negative impact of colonization was the exploitation of the natural resources by foreigners which did not benefit the local communities, but instead the colonizers
The colonial governments introduced improved medical care, and better methods of sanitation.
<span>The peer review process can create a conflict of interest because favoritism can be shown. Peers often want to support their friends or those close to them so will choose their projects over others. They are trying to help those they care about to succeed.</span>
