Heredity and Genetics Unit Review

What genotype would "true-breeding" organisms be?

• one parent homozygous dominant and one parent homozygous recessive

• both parents heterozygous

The different forms of a gene

• heredity
• genetics
• gene
• alleles

This trait always shows up in an organism when the allele is present

• dominant allele
• codominance
• probability
• recessive allele

This trait is hidden whenever the dominant allele is present

• dominant allele
• codominance
• recessive allele
• Punnett Square

A chart that shows all the possible combinations of alleles that can result from a genetic cross

• dominant allele
• codominance
• probability
• Punnett Square

An organism's physical appearance or visible traits

• fertilization
• genotype
• phenotype
• homozygous

An organism's genetic makeup, or allele combination

• fertilization
• genotype
• phenotype
• heterozygous

An organism that has two different alleles for a trait (hybrid)

• fertilization
• genotype
• homozygous
• heterozygous

An organism that has two identical alleles for a trait (purebred)

• genotype
• phenotype
• homozygous
• heterozygous

Two parents have type O blood. What will the blood type of their children be?

• O

• They can have all four types of blood

• Either A or O

• AB