topic 2

Incomplete dominance

Neither allele for a trait is completely dominant or recessive, causing a blended phenotype e.g red and white makes pink

Homozygous

If an individual has two alleles for a gene they’re homozygous

Heterozygous

If an individual has two different alleles for a gene they’re heterozygous

Dominant allele

Expressed in the phenotype even when one allele is present

Recessive allele

Only expressed in the phenotype if two copies are present

Genotype

And organisms genetic makeup specifically the combination of alleles

Phenotype

Physical observable trait that results from the genotype

Gene

A specific sequence of DNA based which codes for a sequence of amino acids in a polypeptide chain

Allele

Specific version of a gene

Loci point

The specific location of a gene on a chromosome

Chromosome

A pair of chromosomes that carry the same genes but may have different version of those genes