Blog #14

What was you favorite activity/topic this year? Why was it a favorite?
I enjoyed doing all those labs in this biology class. Not only were the labs fun but it also taught me many different things. I like to do different biology experiments. 

What was your least favorite? Why?
My least favorite activity this year would be doing the fingerprint lab yesterday. Even though I like labs, I hated this one because it got my fingers all black after. Using water and soap together didn't help get the marks away. 


If you could change one thing (Not the amount of homework) what would it be and how would you change it?  
I didn't get good grades on all of my tests. I wish i could change the grades on my tests. If I knew that I was going to get a bad grade, I would have studied harder than I did. 

Blog #13

How has DNA changed how we investigate crimes? What are the two main tests? Describe them.

DNA has changed how we investigate crimes by showing us their identity. DNA is part of your blood, saliva, hair, and fingerprints. The two main tests are PCR and RFLP.

PCR(polymerase chain reaction) is a single or few copies of DNA. It generates thousands to millions of DNA sequence. It consists of cycles of repeated heating and cooling of the reaction for DNA melting.

RFLP(restriction fragment length polymorphism) is a technique that exploits variations in homologous DNA sequences. It refers to a difference between samples of homozygous DNA molecules.