alleles

The depressive patients with APOEε4 allele had significantly higher level of TC and APOB、higher retardation scores of HAMD17 compared with those of patients without it.

Each gene has two alleles, one inherited from each parent.

The allele for blue eyes is recessive.

Individuals can be homozygous or heterozygous for a particular allele.

Mutations can result in new alleles being formed.

The allele frequency in a population can change over time.

Genetic disorders can be caused by harmful alleles.

Selective breeding can increase the frequency of desirable alleles.

The inheritance of an allele follows Mendelian principles.

The dominant allele will be expressed in the phenotype.

Alleles determine the variations in traits among individuals.