Upload
christal-stewart
View
217
Download
0
Tags:
Embed Size (px)
Citation preview
Recap
What is a phenotype? What is a genotype?
Which allele is expressed? (What gene type overpowers the other?)
What happens when both a dominant and recessive allele are present?
What three combinations can yield 100 percent of the same phenotype?
Immediate family
2. My eye and hair genotypes are____ _____
3. Jason’s eye and hair genotypes____ _____
Both My brother Jason and I are recessive
Jason
MikeMrs. B
Mom
Dad
1. What are our phenotypes?
a) hairb) eyes
Mike is Dominant
4. What is his phenotype?
5. What could his phenotypes be?
Since my parents are Dominant and they had both Dominant and recessive offspring, what must their genotype be? a) hairb) eyes
Punnett Square
Mom (Bb) B b
Dad (Bb) B
b
What proportion of the offspring are recessive?
What proportion of the offspring are dominant?
Which generation in Mendel's pea plant experiments yielded the same proportions?
Grand-pop and Grand-mom
Grand-pop was blonde and had blue eyes.
1. What is the genotype for his a) hairb) eyes
Grand-mom has brown eyes and had brown hair. Both of her sons have brown hair and brown eyes.
2. What is Grand-mom’s genotype? a) hairb) eyes
Punnett Square
Grand-mom (BB)
Grand-pop (bb)
What proportion of the offspring are recessive?
What proportion of the offspring are dominant?
Which generation in Mendel's pea plant experiments yielded the same proportions?
Mom-mom and Pop-popMom-mom had Brown eyes and brown hair. 1. What could
her genotypes be?
a) hairb) eyes If I tell you that my mom and two of her brothers have brown eyes and brown hair, and her other one brother and sister have blue eyes and blonde hair,
2. What are Mom-mom’s genotypes? a) hairb) eyes
Pop-pop has blonde hair and blue eyes
3. What are his genotypes?a) hairb) eyes
Punnett Square
Mom-mom (Bb)
Pop-pop (bb)
What proportion of the offspring are recessive?
What proportion of the offspring are dominant?
Which generation in Mendel's pea plant experiments yielded the same proportions?
Jason and CarolynJason is recessive
1.What are his phenotypes a) hairb) eyes
and genotypesc) haird) eyes
Carolyn is heterogeneous Dominant
2. What are her phenotypes a) hairb) eyes
genotypesa) hairb) eyes
3. What can we use to determine possible offspring?
Punnett Square
Jason (bb) b b
Carolyn (Bb) B
b
What proportion of the offspring are dominant?
What proportion are recessive?
What do you think the phenotypes of their son Benjamin are?
Mike and Steph1. What are
their phenotypes?
a) hairb) eyes
2. What could their genotypes be?a) hairb) eyes
Eli
1. What are Eli’s
phenotypes a) hairb) eyes
2. Is Eli dominant or recessive?
3. What are his genotypesa) hairb) eyes
Punnett Square
Mike
Steph
Eli
What proportion of the offspring are recessive?
What proportion of the offspring are dominant?
Which generation in Mendel's pea plant experiments yielded the same proportions?