Unit 6 - Genetics Terms

an allele that is expressed fully whenever it is present. Represented by a capital letter.

• Recessive

• Dominant

• Gene

• Substitution

An allele that is expressed only if the dominant allele is not also present. Represented by a lowercase letter.

• Dominant

• Hybrid

• Phenotype

• Recessive

Multiple versions or alternative forms of a gene

• Allele

• Substitution

• Phenotype

• Trait

Tags

NGSS.HS-LS3-2

the PHYSICAL APPEARANCE of a trait, such as brown eye color. Phenotype is determined by genotype

• Allele

• Genotype

• Phenotype

• Codominance

the alleles themselves, represented by letters such as Bb. Genotype determines phenotype.

• Genotype

• Phenotype

• Dominant

• Trait

Tags

NGSS.HS-LS3-1

both alleles are the same; in this case they are both dominant (as in BB)

• Homozygous Recessive

• Heterozygous Dominant

• Homozygous Dominant

• Hybrid

Tags

NGSS.HS-LS3-2

both alleles are the same; in this case they are both recessive (as in bb)

• Homozygous Dominant

• Homozygous Recessive

• Heterozygous

• Purebred

the present alleles are different – one is dominant and one is recessive (as in Bb)

• Homozygous Dominant

• Heterozygous

• Purebred

• Pedigree

another word for HOMOZYGOUS (dominant or recessive, BB or bb)

• Pedigree

• Heterozygous

• Codominant

• Purebred

another word for HETEROZYGOUS (Bb)

• Purebred

• Hybrid

• Pedigree

• Substitution