Register to reply

Species, concept of pure and impure breeds.

by Prashasti
Tags: breeds, concept, impure, pure, species
Share this thread:
Jun8-14, 07:05 AM
Prashasti's Avatar
P: 30
The definition of species is "a group of organisms that can interbreed with each other". So, how is interbreeding of two dogs of different species, say a german shepherd and a pitbull, possible? And the concept of a "pure" and "impure" breed - how will you explain it? As according to the definition, a GSD cannot be crossed with a pitbull?!
Phys.Org News Partner Biology news on
'Office life' of bacteria may be their weak spot
Transparent larvae hide opaque eyes behind reflections
Peacock's train is not such a drag
Simon Bridge
Jun8-14, 08:08 AM
Sci Advisor
HW Helper
Simon Bridge's Avatar
P: 13,093
A breed is not the same thing as a species.

German Shepherd and Pitbull are not different species, they are different breeds of the same species. The concept of pure and impure breeds refers to inherited characteristics of the breed and lineage (pedigree).

A breed is a stock of animals or plants within a species having a distinctive appearance and typically having been developed by deliberate selection.

More on species:
Jun10-14, 08:01 AM
P: 288
Also, your definition lacks precision. It could be improved thus:

A species is a group of organisms that can interbreed with each other and commonly do so.

Lions and tigers can interbreed yet are members of separate species, yet interbreeding is rare.

Register to reply

Related Discussions
Are there any dog breeds that can't mate with wolves any more? Biology 7
Solution of NaCl and CO2. Name species and find concentrations of species. Biology, Chemistry & Other Homework 2
Designer dog breeds General Discussion 14
Another impure twin paradox Special & General Relativity 12
Taiwan breeds green-glowing pigs Biology 5