Punnett Squares
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.
The method we use today to predict the traits of offspring is ________________ .
What is the Punnett Square.
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?
What is Bb, Bb, Bb, Bb.
A pair of alleles that are the same are called __________________.
What is homozygous.
HH, TT, zz. Each of these are ______________________.
What is homozygous.
a characteristic or features of one organism that are passed from parent to offspring.
What is inherited traits?
Complete a Punnett square someone who is heterozygous for tall (T) and for someone who is homozygous for short (t).
What is Tt, Tt, tt, tt
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?
A pair of alleles that are different are called ____________________.
What is heterozygous.
Jim and Jane are both heterozygous for being tall. What are the chances that they will have a short child?
What is 25% chance.
Traits that hide other traits when passed on to offspring
What is dominant.
Complete a Punnett square for someone who is Homozygous for brown eyes (G )and someone who has blue eyes (g).
What is Gg, Gg, Gg, Gg.
Tim and Jenny both have dark skin, but each of them carry a recessive trait for light skin. What are the chances that their children will have dark skin? Light skin?
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.
A ______________ trait is a trait that is hidden by the dominant gene.
What is recessive.
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?
What is Bb.
__________________ is simply the expression of the genotype. It is how the trait is expressed (ie. dark hair, tall, big lips, etc.)
What is phenotype.
physical characteristics of an organism that are not passed to offspring genetically (riding a bike)
What is Acquired Traits?