Vocabulary
Linked Genes
Genotypes
Punnett Squares
Pedigrees
100
The name for an allele that is not expressed when the dominant allele is present.
What is recessive?
100
Genes that happen to be located close to one another on the same chromosome.
What are linked genes?
100
An organism that has two copies of the same allele.
What is homozygous?
100
What percent of offspring will be heterozygous? 
What is 50%?
100
The type of trait that shows an inheritance pattern in which two parents without the trait can have a child with the trait.
What is a recessive trait?
200
The passing of traits from parent to offspring is called.
What is heredity?
200
Scientist who proved the existence of linked genes through experiments with red-eyed and white-eyed flies.
Who is Morgan?
200
A capital letter in the genotype represents this type of allele.
What is dominant?
200
In this cross: AA x aa
The percentage of offspring that will be homozygous recessive.
What is 0%?
200
The type of inheritance pattern shown in this pedigree.
What is dominant?
300
One of two or more forms of a particular gene that can vary between individuals.
What is an allele?
300
The process in which chromosomes line up during meiosis and swap sections of genetic material.
What is crossing over?
300
If either parent in a genetic cross have this genotype, they cannot have offspring with the recessive trait.
What is homozygous dominant?
300
The ratio of all 4 phenotypes in the offspring of a dihybrid cross.
What is 9:3:3:1?
300
The genotype of individual II-4.
What is homozygous recessive?
400
A pattern of inheritance where one trait is governed by multiple genes with more than one allele each. Creates a bell-curve pattern.
What is polygenic inheritance?
400
The two pieces of data in a genetic cross that need to be compared in order to determine if they are linked genes.
What are the actual offspring ratio vs. the expected offspring ratio?
400
The genotype of either parent in a dihybrid cross involving gene A and gene B.
What is AaBb?
400
In this cross: aaBB x AAbb
The percentage of offspring that will display both dominant phenotypes.
What is 100%?
400
The genotype of individual II-5.
What is heterozygous?
500
The formation of a population with new traits that is unable to produce viable offspring with the pre-existing population.
What is speciation?
500
In crosses involving linked genes, the % of offspring that inherit a new combination of alleles that was not present in the parents. (Same value as Chromosome map units.)
What is the recombination percentage?
500
The genotype of any offspring of a dihybrid cross (gene A and gene B) that display a recessive phenotype for both traits.
What is aabb?
500
In this cross: AaBb x Aabb
The ratio of offspring that will be homozygous recessive for both traits.
What is 1 out of 8?
500
If individual III-3 and III-6 reproduce, the percentage of their offspring that will display the trait.
What is 50%?