What did you do over break?

1. What did you do over break? • What questions do you have about the sex linked, Multiple alelle problems?

2. Traits and Alleles • What if Elmo and Zoe fell in love, got married and had a baby? What might their baby look like? With your team, come up with a list of as many traits and allele names as possible.

3. What is Elmo’s Genotype? • The Trait: Nose Color • Possible Phenotypes: • Pink = Dominant • Orange = Recessive • Genotype Key: • P – dominant • p – recessive Orange Nose!

4. What is Zoe’s Genotype? • The Trait: Nose Color • Possible Phenotypes: • Pink = Dominant • Orange = Recessive • Genotype Key: • P – dominant • p – recessive Pink nose!

5. Predicting an Outcome • What is the probability that Zoe will pass on the allele for a Pink nose? • Zoe’s genotype is: • Zoe’s heterozygous! Pp 1 P allele out of 2 possible alleles, so ½ or 50% chance that Zoe will pass on the allele for a pink nose.

6. Predicting an Outcome • What is the probability that Elmo will pass on an allele for an orange nose? • Elmo’s genotype is: • Elmo is homozygous! pp 2 p alleles out of 2 possible alleles, so 2/2 or 100% chance that Elmo will pass on the allele for an orange nose.

7. Predicting an Outcome • Can you predict ALL of the possible nose phenotypes Elmo and Zoe’s baby could have? X pp Pp

8. Predicting an Outcome • Can you predict ALL of the possible nose genotypes Elmo and Zoe’s baby could have? X pp Pp

9. Predicting Outcomes – Punnett Squares P p p p

10. Sesame Street Genetics Rosita Telly Zoe Elmo Abby Super Grover (aka Grover)