Genetics Review

A characteristic that an organism can pass to offspring through genes

• Trait

• Genotype

• Allele

A physical trait you CAN see

• Phenotype

• Genotype

• Allele

An allele that is masked (hidden/not seen) when a dominant allele is present

• Trait

• Recessive

• Dominant

An allele whose trait always shows up in the organism when it is present

• Phenotype

• Recessive

• Dominant

The genetic makeup of an organism (Traits you CAN'T see)

• Phenotype

• Dominant

• Genotype

Different forms of a gene or trait

• Phenotype

• Genotype

• Allele

nose shape

• Inherited Trait

• Acquired Trait

Able to taste PTC

• Inherited Trait

• Acquired Trait

Tattoo

• Inherited Trait

• Acquired Trait

Two Matching Dominant Genes (or alleles)

• Homozygous Dominant

• Homozygous Recessive

• Heterozygous