Genetics: The study of Heredity Vocabulary

_________ is when an organism has two identical alleles for a trait.

• Homozygous

• Hybrid

• Dominant

• Recessive

________ is the passing of physical characteristics from parent to offspring.

• Genetics

• Heredity

• Fertilization

• Pollination

What type of organism has two different alleles for a trait?

• Purebred

• Hybrid

• Fertilization

• Pollination

What is the scientific study of heredity?

• Heredity

• Genetics

• Fertilziation

• Pollination

What is one whose trait always shows up in the organism when the allele is present?

• Dominant

• Recessive

What is a specific or physical characteristic?

• Trait

• Allele

• Gene

• Chromosome

What is an organism that has two different alleles for a trait?

• Homozygous

• Heterozygous

• Purebred

• Fertilization

What is used to describe the factors that control a trait?

• Alleles

• hybrid

• Gene

• Purebred

What is hidden whenever the dominant allele is present?

• Dominant

• Recessive

What is an organisms physical appearance, or visible traits?

• Phenotype

• Genotype