Day 25/26: GENETICS!

We spent the first part of classes reviewing the tests we took last class. I was happy with my performance on the multiple choice section, but definitely need to improve my short answer questions.

We then reviewed monohybrid crosses as a class. (Lucky for me, because I had trouble understanding it the night before!!)  We first went over basic vocabulary involved in genetic crossing and then reviewed the general procedure for genetic problems:

                 Step 1: Write down information about dominant and recessive traits eg. Dom: BB or Bb                                       Rec: bb
                 Step 2: Figure out parent's genotype eg. Aa x Aa
                 Step 3: Write down possible gametes
                 Step 4: Create and label square
                 Step 5: Fill in square
                 Step 6: Figure phenotypic and genotypic ratios eg. Phenotypic: 3 dom :1 rec
                             Genotypic: 1AA:2Aa:1aa

Then we did several, more difficult practice problems before taking a quiz. Here are some examples: