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Background Info

Cold Spring Harbor

Can you tell if an organism's genotype is SS or Ss just by looking at the organism's phenotype?

Define testcross.

What do you want to cross your unknown organism (S_) against in a test cross?

Mendelian Inheritance

Carefully listen... several times if necessary. He's going to work a genetics problem with you.

You should be familiar with how to set up and complete a Punnett Square after this lecture.