Biological father –  or sometimes simply referred to as "Father" is the genetic father of a child. Posthumous father – father died before children were born (or even conceived in the case of artificial insemination). Putative father – unwed man whose legal relationship to a child has not been established but who is alleged to be or claims that he may be the biological father of a child. Sperm donor – an anonymous or known biological father who provides his sperm to be used in artificial insemination or in vitro fertilisation in order to father a child for a third party female. Also used as a slang term meaning "baby daddy". Surprise father – where the men did not know that there was a child until possibly years afterward
Teenage father/youthful father –  Father who is still a teenager. Non-biological (social and legal relationship)
Adoptive father – the father who has adopted a child
Cuckolded father – where the child is the product of the mothers adulterous relationship
DI Dad – social/legal father of children produced via Donor Insemination (where a donors sperm were used to impregnate the DI Dads spouse)
Father-in-law – the father of ones spouse
Foster father – child is raised by a man who is not the biological or adoptive father usually as part of a couple. Mothers partner – assumption that current partner fills father role
Mothers husband – under some jurisdictions (e.g.
These three strains are called "tremper albinos", "rainwater albinos" and "bell albinos". In amphibians
As with reptiles, many amphibians labeled as albino are, in fact, not completely lacking in all colour pigments. They are actually amelanistic, not albino. Amphibians have six types of chromatophore in their skin, i.e. melanophores, xanthophores, erythrophores, leucophores, cyanophores and iridophores. An amelanistic amphibian therefore, may still have various pigmentation. The incidence of albinism in frogs, salamanders, and newts is relatively higher than other taxa. It has been estimated that one in four hundred of these animals is albino. When albino tadpoles hatch, they are almost transparent. This may help camouflage them initially, however, after two weeks, when their hindlegs begin to emerge, they become milky white. A survey in 2001 found hundreds of tiny albino plains leopard frogs, but when the researcher returned a few months later, not a single albino adult could be found.In European Salamandridae, albinism has been recorded in the fire salamander (Salamandra salamandra), gold-striped salamander (Chioglossa lusitanica), Italian crested newt (Triturus carnifex), marbled newt (Triturus marmoratus), Iberian ribbed newt (Pleurodeles waltl), alpine newt (Ichthyosaura alpestris) and two sub-species of the smooth newt (Lissotriton vulgaris vulgaris and Lissotriton vulgaris meridionalis). Genetics
Genetic studies of albinism in amphibians have focused on mutations in the tyrosinase gene. The albino phenotype of the leopard frog (Rana pipiens) has been attributed to a failure in post-translational control in a single recessive tyrosinase gene which still has some tyrosinase and DOPA oxidase activity.