Bikini bottom genetics practice 4.02 answers

1. Phenotype and Genotype
Trait Dominant gene Recessive gene
Body shape Squarepants (S) Roundpants (s)
Body color Yellow (Y) Blue (y)
Eye shape Round (R) Oval (r)
Nose style Long (L) Stubby (l)
1.Use the information for SpongeBob’s traits to write the phenotype for each item.
a. LL – b. yy - c. Ss -
d. RR – e. Rr - f. ll -
g. ss – h. Yy -
Long Blue Squarep
Round
Round Stubby
Roundpants
Yellow

2. Phenotype and Genotype
Trait Dominant gene Recessive gene
Body shape Squarepants (S) Roundpants (s)
Body color Yellow (Y) Blue (y)
Eye shape Round (R) Oval (r)
Nose style Long (L) Stubby (l)
2.Use the information for SpongeBob’s traits to write the genotype (s) for each
item.
a. Yellow body - e. Stubby nose –
b. Round pants - f. Round eyes –
c. Oval eyes - g. Square pants -
d. Long nose - h. Blue body -
YY or Yy
ll
ss
RR or Rr
rr
SS or Ss
LL or Ll yy

3. 3. Determine the phenotype for each
genotype using the information provided
about SpongeBob.
Yellow body color is dominant to blue.
YY _________ Yy ________ yy ________
Square shape is dominant to round.
SS _________ Ss ________ ss _________
Yellow Yellow Blue
Square Square
round

4. 4. For each phenotype, give the genotype that
are possible for Patrick.
A tall head (T) is dominant to short (t)
Tall = _______________________
Short = ______________________
Pink body color (P) is dominant to yellow (p)
Pink body = ________________________
Yellow body = ______________________
TT or Tt
tt
PP or Pp
pp

5. Phenotype and Genotype
Trait Dominant gene Recessive gene
Body shape Squarepants (S) Roundpants (s)
Body color Yellow (Y) Blue (y)
Eye shape Round (R) Oval (r)
Nose style Long (L) Stubby (l)
Use the information for SpongeBob’s traits to write the genetypes for each item.
17. Heterozygouse round eyes – 18. Homozygous long nose -
19. Purebred squarepants - 20. Hybrid yellow body -
Rr LL
SS Yy