Bell Ringer: 2/9-PHONES AWAY CHOOSE YOUR GROUPS WISELY. DO NOT TOUCH ANY OF THE ITEMS UNTIL INSTRUCTED TO DO SO! Begin reading the Best Beaks Lab Background, Purpose, and Procedures.

In this lab, we will investigate the results that variation & competition have on a population. You will complete the lab with your table group. You will collect and share data to determine the results that variation & competition have on a population.

Best Beaks Lab Each of you will be given different types of “beaks” and you have to try to “eat” as many food items as you can within the given time.

Type of Food Rubber bands = Worms

Type of Food Buttons = Grubs

Type of Food Furry Ball = Water bugs

Type of Food Beads with holes = Snails

Type of Food Foam stickers = Nectar

With your table group, form a hypothesis that states which type of food is best suited for each beak (listed in the purpose).

You need 10 pieces of food to survive You need 10 pieces of food to survive. You need 15 pieces of food to reproduce. How many of you were able to survive? How many of you were able to reproduce? Which environment was best suited for your survival? Reproduction?

Fill in your individual data table as you rotate through the stations Fill in your individual data table as you rotate through the stations. When we complete each station, you will complete the group data table with the people at your table.

After you complete the data table……… Complete the analysis questions on your own. Please turn into the INBOX when you are finished. Adaptive radiation occurs when a variety of new forms—including new related species—adapts to and fills a variety of ecological niches. Adaptive radiation has occurred multiple times in evolutionary history. The principles of adaptive radiation are most clearly illustrated by Darwin’s case study of the finches of the Galapagos Islands. Thirteen different varieties of Galapagos finches were noted by Darwin These differed mostly in the shape and size of their beaks, on finch form for each island in the Galapagos chain. Darwin realized that these thirteen varieties had descended from one common ancestor. Each form adapted to local selection pressures during adaptive radiation.