Sexing
Through sexing, biologists and agricultural workers determine the sex of livestock and other animals they work with. The specialized trade of chicken sexing has a particular importance in the poultry industry.
The sex of mammals can often be determined using sexually dimorphic characteristics. Assisted physical sexing is a relevant in vertebrates with cloacae when there is no external sexual dimorphism. In veterinary practice, fibroscopy is used under general anaesthesia in birds such as parrots.
Molecular sexing is a set of techniques that use DNA for determining sex in wild or domestic species or humans. Markers commonly used include amelogenin, SRY and ZFX/ZFY. Various techniques have been developed using simple polymerase chain reaction product size dimorphism, presence/absence, restriction dimorphism, or even sequencing.
