1. Pop Quiz with a Twist
Mendelian Genetics

2. #1
Give the genotypic and phenotypic offspring percentage that results from the cross of the two guinea pigs in the slide. There is more than one possible genotypic ratio.

3. #1 Answer: Genotypic percentage A: 50% Bb and 50% bb
Phenotypic percentage A:
50% black and 50% brown
Genotypic percentage B:
100% Bb
Phenotypic percentage B:
100% black

4. #2
What are the possible genotypes for the parents of the guinea pig pictured in this slide? Justify your answer.

5. #2 Answer:
Ss x ss or
Ss x Ss

6. #3
Use the ticket you pulled to create a Punnett square that shows the possible offspring of the cross indicated. Give the genotypic and phenotypic ratio of the offspring.