Albinism
A condition resulting from the lack of production of the pigment melanin in the skin, hair, iris. An individual suffering from albinism is called an albino. In humans, albinism is inherited as a homozygous recessive condition.

Algae
An umbrella term for various simple organisms that contain chlorophyll (and can therefore carry out photosynthesis) and live in aquatic habitats and in moist situations land. The term has no direct taxonomic significance Algae range from macroscopic seaweeds such as giant kelp, which frequently exceeds 30 m in length, to microscopic filamentous and single-­celled forms such as Spirogyra and Chlorella.

Allele
Alternative form of a genetic locus; a single allele for each locus is inherited from each parent (e.g., at as locus for eye color the allele might result in blue or brown eyes).
2. One of the alternative versions of a gene that may occupy a given locus (gene site).
3. One of the mutational forms of a gene, distinguished from other alleles by its phenotypic effects.
4. One of the alternative forms of a gene. For example, if a gene determines the seed color of peas, one allele of that gene may produce green seeds and another allele produce yellow seeds. In a diploid cell there are usually two alleles of anyone gene (one from each parent). Within a population there may be many different alleles of a gene; each has a unique nucleotide sequence.
5. One of a series of possible alternative forms of a given gene, differing in DNA sequence and affecting the functioning of a single product (RNA or protein).