Punnett Squares
Complete a punnet square for TT and tt. What are the 4 possible offpring?
What is Tt, Tt, Tt, Tt
Jimmy has a big nose. His genotype is GG. Sally also has a big nose, but 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.
An offspring which has XY chromosomes has inherited the Y from their...
Father
The method we use today to predict the traits of offspring is ________________ .
What is the Punnett Square.
Complete a Punnett square for Gg and Gg. What are the 4 possible offpring?
What is GG, Gg, Gg, gg
Jared carries both alleles for brown hair. His wife's genotype carries both allels for blonde hair. Brown hair is dominant to blonde hair. What are the possible genotypes for their children? (Use B for brown and b for blonde.)
What is Bb, Bb, Bb, Bb.
A trait that is not inherited but learned is called an _____ trait.
What is acquired.
HH, TT, zz. When offspring inherits two like genes from their parents can be described by the word...
What is purebred.
Capital letters are always represented by the _____________ allele, not the recessive allele.
What is dominant.
Complete a Punnett square someone who's genotype is tall but carries the short allele, and for someone who is short. (Use (T) for tall and (t) for short.) What are the 4 possible offpring?
What is Tt, Tt, tt, tt
Mike is has brown eyes but carries the blue eyed recessive gene. His wife has blue eyes. What percentage of their children will most likely have brown eyes?
What is 50% brown?
A pair of alleles that are different are called ____________________.
What is hybrid.
Jim and Jane are both for being tall but are carriers of the short gene. 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 carries both alleles for green eyes and someone who has blue eyes which is recessive. (Green (G) is dominant over blue (g).) What are the 4 possible offpring?
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?
What is 75% dark skin.
___________________ describes a pair of alleles and is represented by letters such as Tt or TT.
What is genotype.
GG, Gg, Gg, gg. Green eyes are dominant to blue eyes. What percent have green eyes? What percent of the offspring will have the phenotype of blue eyes? (Use (G) for green and (g) for blue.)
What is 25% will have blue eyes.
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's genotype is Ff and he has long fingers. His wife also has long fingers, but one of their children has short fingers. What is his wife's genotype? (Use (F) for long fingers and (f) for short fingers.)
What is Ff.
__________________ is simply the expression of the genotype. It is how the trait is expressed (ie. dark hair, tall, big nose, etc.)
What is phenotype.
There are four nitrogen bases that make up the double helix of DNA. What are the four letters that stand for those bases AND which letters always connect with eachother?
What is A, C, T, G. T and A always combine and C and G always combine.
Who is considered the 'Father of Genetics?"
Who is Gregor Mendel.