Vocab #18 Mr. Addeo

Different forms of a gene. Alleles Different forms of a gene.

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

An allele that is hidden whenever the dominant allele is present. Recessive An allele that is hidden whenever the dominant allele is present.

An organism’s physical appearance (visible traits). Phenotype An organism’s physical appearance (visible traits).

An organism’s genetic makeup (allele combinations). Genotype An organism’s genetic makeup (allele combinations).