X hits on this document

58 views

0 shares

0 downloads

0 comments

9 / 25

Copyright © The McGraw-Hill Companies, Inc. Permission required for reproduction or display

Clover fields—natural selection for shortness

On the left, tall clover is grazed by cattle, leaving short plants to survive and reproduce. On the right, in ungrazed fields the clover grows tall, reproduces, and these plants pass along their taller characteristics.

Document info
Document views58
Page views58
Page last viewedMon Dec 05 15:19:32 UTC 2016
Pages25
Paragraphs98
Words1439

Comments