New York State Chemistry RegentsNew York State Earth Science Regents

Living Environment Regents June 2006 Question 71 PDF Print E-mail


Correct Answer: Option1 selection for favorable variations

This is natural selection. It is a process that causes helpful traits (those that increase the chance of survival and reproduction) to become more common in a population and causes harmful traits to become more rare. This occurs because individuals with advantageous traits are more likely to reproduce, meaning that more individuals in the next generation will inherit these traits. Over many generations, adaptations occur through a combination of successive, small, random changes in traits, and natural selection of the variants best-suited for their environment

If the environmental conditions were the same as that of the ancestor, then there is most like very slight changes from the characteristic of the common ancestor. Thus, option 2 is incorrect.

Option 3 is incorrect. Abnormal mitotic cell division can occur is lifetime of a certain bird however, this cannot be passed on to the next generation because it is just a change of phenotypic characteristic.

Option 4 is incorrect. Changes in characteristics cannot happen in just one lifetime. Evolution occurs gradually through passage of generations depending on the conditions in the environment of the populations.


You must be a registered user to post comments.

Copyright Information

All works and materials contained within this site Copyright © 2009 Technology Strategies For Success inc.


We are not affiliated with, nor endorsed by, the New York State Education Department.

The information contained in this website is for general information purposes only. The information is provided by "Technology Strategies for Success" and while we strive to keep the information up-to-date and correct, we make no representations or warranties of any kind, express or implied, about the completeness, accuracy, reliability, suitability or availability with respect to the website or the information, products, services, or related graphics contained on the website for any purpose. Any reliance you place on such information is therefore strictly at your own risk.