Punnett Squares
Complete a punnet square for TT and tt.
T T
t Tt Tt
t Tt Tt
Jimmy has a big nose. His genotype is GG. Sally also has a big nose. Her genotype is Gg. What are the possibilities for their children's genotypes?
GG, GG, Gg, Gg
A _______________ trait is a trait that is expressed or shown.
Dominant
What plant did Gregor Mendel study?
Peas
What days do you meet for SEL after first period?
Wednesdays
Complete a Punnett square for Gg and Gg.
G g
G GG Gg
g Gg gg
Jared is homozygous for brown hair. His wife is homozygous for blonde hair. Brown hair is dominant to blonde hair. What are the possible genotypes for their children? Use B/b alleles.
Bb, Bb, Bb, Bb
All Bb
A pair of alleles that are the same are called __________________.
Homozygous
A ______________ trait is a trait that is hidden by the dominant gene.
Recessive
Where can you find chargers and headphones in this classroom?
Third drawer on the left side of the room
(can show by walking over)
Complete a Punnett square someone who is heterozygous for tall and for someone who is homozygous for short. Use T/t alleles.
T t
t Tt tt
t Tt tt
Mike is heterozygous for brown eyes. His wife has blue eyes. What percentage of their children will have brown eyes? If they have 4 children, how many will likely have blue eyes?
2 out of 4
50%
Half
A pair of alleles that are different are called ____________________.
Heterozygous
Hh, Zz, Xx. All of these are _______________.
Heterozygous
Name all of the adults in the room.
Mrs. K
Megan
Mrs. V
Ms. Faith
Complete a Punnett square for someone who is Homozygous for green eyes and someone who has blue eyes. Green is dominant over blue.
G G
g Gg Gg
g Gg Gg
Tim and Jenny both have dark skin, but each of them carry a recessive trait for light skin. If they have 4 children, how many would likely have dark skin?
3 out of 4
75%
Three-quarters
___________________ describes a pair of alleles and is represented by letters such as Tt or TT.
Genotype
HH, TT, zz. All of these are ______________________.
Homozygous
What time does consultation period happen?
8 - 8:24
The four answers for a Punnett square are Zz, Zz, zz, zz. What are the genotypes for the parents?
What is Zz and zz.
James is homozygous for big lips. His wife also has big lips, but one of their children has small lips. What is his wife's genotype? Use B/b alleles.
Bb
__________________ is the expression of the genotype, or how the trait is expressed (ie. dark hair, tall, big lips, etc).
Phenotype
Capital letters are always represented by the _____________ allele, not the recessive allele.
Dominant
Name both of our Vice Principals.
Ms. Lee
Mr. Voth