Got Milk?

Read the following article:  Got Milk? How? - Scientists are tracking down the first people who squeezed this nutritious liquid out of animals thousands of years ago by Emily Sohn.  Evolutionarily, why do we drink milk?  Why did only babies drink milk?  How come now all ages of people drink milk?  What are its nutritious benefits?

“Which made the chicken, the hormone or the gene?”

Read the following article:  Half rooster, half hen - Study of special chickens suggests new thinking on hormones and gender by Stephen Ornes.  Discuss the role of hormones and genetics on determination of sex. 

Are bacteria our new fingerprint?

Read the following article:  The tell-tale bacteria - What germs populate the hands may be as unique as fingerprints by Stephen Ornes.  Relate it to what you have learned earlier this year about bacteria, genetic fingerprints, etc.

What is a microbe fingerprint and how might it be useful?