Punnett Squares
Complete a Punnet square for TT and tt. Just give the genotypes possible.
What is 100%Tt
Jimmy has a big nose. His genotype is NN. Sally also has a big nose. Her genotype is Nn. What are the possibilities for their children's genotypes?
What is NN, NN, Nn, Nn
___________ 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 or hybrid
The tool we use today to predict the traits of offspring is ________________ .
What is the Punnett Square.
Complete a Punnett square for Gg and Gg. Just give the genotypes possible.
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 genotypes for their children?
What is Bb, Bb, Bb, Bb.
A pair of alleles that are the same are called __________________.
What is homozygous or purebred
HH, TT, zz. Each of these are ______________________.
What is homozygous or purebred
Capital letters are always represented by the _____________ allele, not the recessive allele.
What is dominant.
Complete a Punnett square someone who is heterozygous for unattached earlobes (dominant) and for someone who is homozygous for attached earlobes (recessive).
What is Uu, Uu, uu, uu
Mike is heterozygous for having dimples. His wife has no dimples, and is purebred recessive. What percentage of their children will most likely have dimples and not have dimples?
What is 50% dimples and 50% dimples?
A pair of alleles that are different are called ____________________.
What is heterozygous or hybrid
Jim and Jane are both heterozygous for having a widow's peak, which is dominant. What are the chances that they will have a child with a straight hairline?
What is 25% chance.
A _______________ trait is a trait that is expressed or shown, and covers the other trait.
What is dominant.
Complete a Punnett square for someone who is homozygous for brown eyes and someone who has blue eyes. Brown is dominant over blue.
What is Bb, Bb, Bb, Bb.
Tim and Jenny both can roll their tongues (a dominant trait), but each of them carry a recessive trait for non-tongue rolling. What are the chances that their children will be able to roll or not roll their tongues?
What is 75% tongue-rollers and 25% non-tongue rollers.
___________________ describes the genes, or alleles (letters) of a trait.
What is genotype.
The genotypes of the children in a Punnett Square are BB, Bb, Bb, bb. Brown eyes are dominant to blue eyes. What percent have brown eyes? What percent have blue eyes?
What is 75% and 25%.
A ______________ trait is a trait that is hidden by the dominant gene.
What is recessive.
The four children in a Punnett square are Zz, Zz, zz, zz. What are the genotypes of the parents?
What is Zz and zz.
James is homozygous for small lips (recessive). His wife has big lips (dominant), and one of their children has small lips. What is his wife's genotype?
What is Ll
__________________ is simply the expression of the genotype. It is how the trait is expressed (ie. dark hair, tall, big lips, etc.)
What is phenotype.
In dogs, floppy ears is dominant to ears that stand up. A purebred, floppy-ear father dog mates with a hybrid, floppy-ear mother dog. What are the genotype and phenotype percents of the puppies?
What is.... 50% FF, 50% Ff
100% floppy ears
What is the name of the Austrian monk who is the "father of genetics"?
Gregor Mendel