Unit 6: Genetics & Epigenetics

one of two or more versions of DNA sequence (a single base or a segment of bases) at a given genomic location

• Alleles

• genes

• genetics

segments of DNA that contain instructions for building the molecules that make the body work.

• genes

• hybrid

• phenotype

the scientific study of genes and heredity

• genetics

• hybrid

• heterozygous

the combination of alleles that they possess for a specific gene

• genotype

• phenotype

• alleles

an observable trait

• phenotype

• hybrid

• alleles

an offspring produced from a cross between parents of different species or sub-species.

• Hybrid

• true-breeding

• genetics

organisms that are homozygous for genes. This means that both alleles are the same

• true-breeding

• genes

• genotype

having different alleles for a particular trait.

• heterozygous

• alleles

• hybrid

the relationship between two versions of a gene.

• dominant

• recessive

• fertilization

a gene that can be masked by a dominant gene

• recessive

• fertilization

• codominance