4. TraitDominant GeneRecessive Gene Body ShapeSquarepants (S)Roundpants (s) Body ColorYellow (Y)Blue (y) Eye ShapeRound (R)Oval (r) Nose StyleLong (L)Stubby (l) What would be a sponge’s phenotype if it had each of the following pair of alleles: LLYYSsRrssRRYyll

5. What would be the genotype(s) for these traits: Yellow body Round pants Long nose Oval eyes Oh goodie! I love this science stuff! TraitDominant GeneRecessive Gene Body ShapeSquarepants (S)Roundpants (s) Body ColorYellow (Y)Blue (y) Eye ShapeRound (R)Oval (r) Nose StyleLong (L)Stubby (l)

6. What would the genotype be for each of these traits: Heterozygous Round Eyes Homozygous Long Nose Homozygous Squarepants TraitDominant GeneRecessive Gene Body ShapeSquarepants (S)Roundpants (s) Body ColorYellow (Y)Blue (y) Eye ShapeRound (R)Oval (r) Nose StyleLong (L)Stubby (l)

7. Once upon a time, one of SpongeBob’s cousins, SpongeBillyBob, fell in love with a cute squarepants girl named SpongeSally. After dating for a few years ( and graduating from Bikini Bottom University ), they got married. Let’s use our understanding of genetics to predict their future.

8. For starters: If SpongeSally’s father is heterozygous squarepants, and her mother is a roundpants, what is her genotype? (We know her phenotype is squarepants) Ss s s Father’s Alleles Mother’s Alleles Ss sSsss sSsss TraitDominant GeneRecessive Gene Body ShapeSquarepants (S)Roundpants (s)

9. TraitDominant GeneRecessive Gene Body ShapeSquarepants (S)Roundpants (s) So we now know that SpongeSally is heterozygous squarepants, and if SpongeBillyBob is also, what would be the possible genotypes and phenotypes if they had children? Ss S s Ss SSSSs s ss What is the probability of kids with squarepants? Roundpants? BillyBob’s Alleles Sally’s Alleles

10. TraitDominant GeneRecessive Gene Eye ShapeRound (R)Oval (r) SpongeBob’s aunt and uncle, SpongeWilma & SpongeWilbur have the biggest round eyes in the family. Wilma is believed to be heterozygous for her eye shape, and Wilbur’s family brags that they are a “pure” line for round eyes. Complete a Punnett square to show the possibilities that would result if Wilma and Wilbur had children. RR R r Would any of their children have oval eyes? Might their grandchildren? Wilbur’s Alleles Wilma’s Alleles RR RRR rRr

11. TraitDominant GeneRecessive Gene Nose StyleLong (L)Stubby (l) SpongeBob’s aunt is famous around town for her itty, bitty stubby nose! She recently met a handsome squarepants fellow who also has a stubby nose. Would it be possible for them to have a child with a long nose? Create a Punnett square to defend your answer. ll l l ll lll l I don’t even have a nose!

12. TraitDominant GeneRecessive Gene Nose StyleLong (L)Stubby (l) If SpongeBob’s aunt with the stubby nose wanted children with long noses, what type of fellow would she need to marry in order to for that to happen? What would give her the best chances? Use this guy again…

13. TraitDominant GeneRecessive Gene Nose StyleLong (L)Stubby (l) Eye ShapeRound (R)Oval (r) If a heterozygous nose and eye sponge crosses with another heterozygous sponge, what would be the probable offspring traits? LRLrlRlr LR Lr lR lr LRLrlRlr LRLLRRLLRrLlRRLlRr LrLLRrLLrrLlRrLlrr lRLlRRLlRrllRRllRr lrLlRrLlrrllRrllrr LRLrlRlr LRLLRRLLRrLlRRLlRr LrLLRrLLrrLlRrLlrr lRLlRRLlRrllRRllRr lrLlRrLlrrllRrllrr LRLrlRlr LRLLRRLLRrLlRRLlRr LrLLRrLLrrLlRrLlrr lRLlRRLlRrllRRllRr lrLlRrLlrrllRrllrr LRLrlRlr LRLLRRLLRrLlRRLlRr LrLLRrLLrrLlRrLlrr lRLlRRLlRrllRRllRr lrLlRrLlrrllRrllrr LlRr Long/Round – Long/Oval – Stubby/Round – Stubby/Oval – LRLrlRlr LRLLRRLLRrLlRRLlRr LrLLRrLLrrLlRrLlrr lRLlRRLlRrllRRllRr lrLlRrLlrrllRrllrr

14. TraitDominant GeneRecessive Gene Nose StyleLong (L)Stubby (l) Eye ShapeRound (R)Oval (r) If a heterozygous nose and eye sponge crosses with another heterozygous sponge, what would be the probable offspring traits? Rr R r Ll L l Ll LLLLl l ll Rr RRRRr r rr Long/Round – Long/Oval – Stubby/Round – Stubby/Oval –