Two heterozygous purple-flowering pea plants are crossed. If purple is dominant over white, what are the expected phenotypic results?

What law BEST explains why an organism with 'Tt' will show only the dominant phenotype?

If an organism inherits one dominant allele and one recessive allele for eye color, their genotype would be:

Two parents have the genotype Gg for a genetic disorder caused by a recessive allele. What is the chance that their children will inherit the disorder?

Which Mendelian law of inheritance states that organisms inherit two copies of each gene and donate one copy to each of their offspring?

In pigs, the allele for a wavy, rough coat (R) is dominant to the allele for a soft, fine coat (r). A rough coat boar and a soft coat sow mate. They produce several litters, 50% are rough coat and 50% are smooth coat. What must be the genotypes of the parents to create this phenotypic ratio?

Imagine two heterozygous parents.  Each has a dominant allele (B) for brown eyes and a recessive allele (b) for blue eyes.  What would the genotypic ratio of the offspring be?

The genotype TT is considered to be:

The genotype Tt is considered to be:

The genotype tt is considered to be:

If square is dominant over round, what is the phenotype for SS?

If square is dominant over round, what is the phenotype for Ss?

If square is dominant over round, what is the phenotype for ss?

For an XX female to express a recessive sex-linked trait, she must have _________.

Human height occurs in a continuous range because it is affected by the interaction of many genes, making it a(n)

Red hair and freckles are commonly inherited together.  Which of following patterns of inheritance explains this?

Which pair of genes in the diagram would be most likely to be inherited together?

In a newly discovered species of flower, it was discovered that the color of the flowers is determined by two different genes.  Which of the following inheritance patterns is this?

A cross between a purebred animal with red hairs and a purebred animal with white hairs produces all animals with BOTH red and white hairs. Which of the following inheritance patterns is this?

In a cross between individuals of a species of tropical fish, all of the male offspring have long tail fins, and none of the females possess the trait. Which of the following inheritance patterns is this?

A cross between a white horse and a chestnut (dark brown) horse produces all light brown horses. Which of the following inheritance patterns is this?

A cross between a tall sunflower and a short sunflower results in sunflowers with a range in heights. Which of the following inheritance patterns is this?

Mutations can be caused by all of the following except _________.

In order for a mutation to be passed on from parent to offspring, the mutation must occur in

On a pedigree, how would a female individual with a disease be notated?

If a mutation only changes the nucleotide sequence for a single protein, then it is known as a

What kind of mutation occurred in the sex chromosome of an individual with the genotype XXY?

How would you categorize a genetic disorder that is equally likely in males and females and is caused by the presence of two affected alleles?

Nondisjunction of autosomal chromosomes, such as chromosome number 21, can result in disorders like

When getting an X-ray taken at the doctor’s office, you notice the technician cover you with a heavy vest.  This vest, you are told, contains lead, a metal that can block X-rays, which are a form of radiation.  The technician covers your torso, and folds the vest over double across your reproductive organs (testes/ovaries).  This is done because radiation can damage the DNA of theses organs, causing a mutation you may pass to children.  Substances like radiation and other certain chemicals are known as mutagens because 

A DNA segment in a somatic cell undergoes the mutation pictured. What is the name of the type of mutation?

Is the mutation pictured to the right a gene or chromosome mutation?

Consider the pedigree in the picture, what type of inheritance is displayed?

What is the genotype of the first individual in generation II?

What is the genotype of the grandmother (the oldest female) in this family?

Selective breeding produces _________.

The diagram represents DNA fingerprints which are the result of gel electrophoresis done on several DNA samples found at a crime scene. Which suspect is linked to the crime scene based on this DNA analysis?

The goal of the Human Genome Project was to

A technique that allows engineers to artificially amplify a section of DNA by copying it over and over again in a lab is known as _________.