A"u-shaped" distribution for a trait, with high frequencies of individuals with either extreme value for a trait (and few individuals with a medium value) is most likely to be caused by selection.

Sarah and john are having a discussion on genetic diversity. sarah believes that it happen over a long period of time. john it happens immediately. who is correct? a. sarah is correct because genetic diversity occurs over a long period of time. b. john is correct because genetic diversity occurs immediately. c. both are correct because genetic variation can occur or long period of time. d. neither are correct because genetic diversity occurs over any period of time

The pressurized plants and fungi mentioned in the video have some surprising similarities. what differences would you expect them to have?

When you aware sick your body produces more leukocytes.briefly describe where the leukocyte are formed,how they are transported,and where they may be stored.