Transcript Slide 1

1. Use the information for SpongeBob’s traits to
write the phenotype (physical appearance) for each
item.
Long nose
Round eyes
(a) LL-______________ (e) Rr-_______________
Blue body
Stubby nose
(b) yy-_______________
(f) ll- _______________
Squarepants
(c) Ss-_______________
(g) ss- _______________
roundpants
(d) RR - _____________
(h) Yy -______________
Round
Yellow body
Characteristic Dominant Gene
Body Shape Squarepants (S)
Body Color
Yellow (Y)
Eye Shape
Round (R)
Nose Style
Long (L)
Recessive Gene
Roundpants (s)
Blue (y)
Oval (r)
Stubby (l)
Use the information in the chart in #1 to write the genotype (or
genotypes) for each trait below.
ll
(a) Yellow body - ___________
(e) Stubby nose - ___________
YY, Yy
(b) Roundpants - ___________
(f) Round eyes - ____________
ss
RR,Rr
(c) Oval eyes - ______________
(g) Squarepants - ___________
SS,Ss
rr
(d) Long nose - _____________
(h) Blue body - ____________
LL,Ll
yy
Determine the genotypes for each using the information in the
chart in #1.
Rr
(a) Heterozygous round eyes -_____
(c) Homozygous long
LL
nose - ______
SS
(b) Purebred squarepants - ______
(d) Hybrid yellow body ______
Yy