Punnett Squares
Complete a punnet square for TT and tt. What are the possible genotypes?
What is Tt, Tt, 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?
What is GG, GG, Gg, Gg
___________ is the passing down of traits from one generation to the next.
What is Heredity.
Hh, Zz, Xx. Each of these are _______________.
What is heterozygous.
A method used to predict the traits of offspring is ________________ .
What is the Punnett Square.
Complete a Punnett square for Gg and Gg. What are the possible genotypes?
What is GG, Gg, 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 phenotypes for their children?
What is 100% brown.
A pair of alleles that are the same are called __________________. A pair of alleles that are different is called ___________>
What is homozygous and heterozygous.
HH, TT, zz. Each of these are ______________________.
What is homozygous.
Lower case letters are always represented by the _____________ allele and are masked by a dominant trait if present.
What is recessive.
Complete a Punnett square someone who is heterozygous for tall and for someone who is homozygous for short. What percent will be tall?
What is 50%
Mike is heterozygous for brown eyes. His wife has blue eyes. What percentage of their children will most likely have brown eyes? What percentage will most likely have blue eyes?
What is 50% brown and 50% blue eyes?
Different forms of a gene is called ____________________.
What is an allele.
Jim and Jane are both heterozygous for being tall. What are the chances that they will have a short child?
What is 25% chance.
A _______________ trait is a trait that is expressed or shown.
What is dominant.
Complete a Punnett square for someone who is Homozygous for green eyes and someone who has blue eyes. Green is dominant over blue. List the possible genotypes.
What is Gg, Gg, Gg, Gg.
Tim and Jenny both have dark hair, but each of them carry a recessive trait for light hair. What are the chances that their children will have dark hair? Light hair?
What is 75% dark skin and 25% light skin.
___________________ describes a pair of alleles and is represented by letters such as Tt or TT.
What is genotype.
Why did Mendel choose to study pea plants?
What is because they have easily observable traits.
The law of __________ states that alleles segregate from one another during gamete formation leads to one allele in each of the four new cells created.
What is segregation.
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 freckles. His wife also has freckles, but one of their children has no freckles. What is his wife's genotype?
What is Bb.
__________________ is simply the expression of the genotype. It is how the trait is expressed (ie. dark hair, tall, freckles, etc.)
What is phenotype.
Describe the difference between a purebred and hybrid.
What is purebred is considered homozygous (both the same as dominant or recessive) and hybrid is heterozygous (one dominant and one recessive).
A red fish mates with a white fish and the offspring is red with blue strips. This is considered what type of inheritance?
What is codominant alleles.