Variation and Inheritance terms

A section of DNA that codes for the protein to give the organism its characteristic.

• Genotype

• Phenotype

• Gene

• Allele

Physical description of a characteristic e.g. red hair

• Dominant

• Recessive

• Genotype

• Phenotype

Allele

• A section of DNA that codes for the protein to give the organism its characteristic.

• The genes that an organism possesses that is shown in the phenotype

• The allele with the most power that is shown in the phenotype.

• A different form of the same gene

The genes that an organism possesses that is shown in the phenotype

• Genotype

• Phenotype

• Homozygous

• Recessive

The allele that is masked by dominant – only shown if there is two present

• Recessive

• Phenotype

• Heterozygous

• Homozygous

The allele with the most power that is shown in the phenotype.

Heterozygous

• The allele that is masked by dominant – only shown if there is two present

• Organism possesses two different alleles – one dominant, one recessive

• Organism possessing two of the same alleles – also known as true breeding

• A characteristic controlled by more than one gene

Organism possessing two of the same alleles – also known as true breeding

Polygenic - A characteristic controlled by a single gene

• TRUE

• FALSE

Genotype - The genes that an organism possesses that is shown in the phenotype

• TRUE

• FALSE