What is "dysgenesis"

Dysgenesis \Dys*gen"e*sis\, n. [Pref. dys- + genesis.] (Biol.) A condition of not generating or breeding freely; infertility; a form of homogenesis in which the hybrids are sterile among themselves, but are fertile with members of either parent race.

n. (context medicine English) Defective development

n. infertility between hybrids

Dysgenesis may refer to:

• Dysgenesis (embryology), which indicates abnormal organ development during embryonic growth and development
• Anterior segment dysgenesis, a failure of the normal development of the tissues of the anterior segment of the eye
• "Hybrid dysgenesis", which relates to a high mutation rate in certain Drosophila strains caused by the transposition of P elements
• The study of dysgenics, a theory that deterioration of hereditary qualities can occur in offspring due to survival of or reproduction by less well-adapted individuals

Dysgenesis

The term dysgenesis is used to describe abnormal organ development during embryonic growth and development. As opposed to agenesis, which refers to the complete failure of an organ to develop, dysgenesis usually implies disordered development or malformation and in some cases represents the milder end of a spectrum of abnormalities.

Examples:

• Gonadal dysgenesis
• Adrenal dysgenesis
• Thyroid dysgenesis
• Anterior segment dysgenesis