Black sheep Warning: You are not logged in. Your IP address will be publicly visible if you make any edits. If you log in or create an account, your edits will be attributed to your username, along with other benefits.Anti-spam check. Do not fill this in! ==Origin== {{Unreferenced section|date=September 2019}} In most [[sheep]], a white fleece is not caused by [[albinism]] but by a common [[dominance (genetics)|dominant]] gene that switches color production off, thus obscuring any other color that may be present.{{citation needed|date=February 2012}} A black fleece is caused by a [[recessive gene|recessive]] gene,<!-- citation needed --> so if a white ram and a white ewe are each [[heterozygous]] for black, about one in four of their lambs will be black. In most white sheep breeds, only a few white sheep are heterozygous for black, so black lambs are usually much rarer than this.<!-- citation needed --> Summary: Please note that all contributions to Christianpedia may be edited, altered, or removed by other contributors. If you do not want your writing to be edited mercilessly, then do not submit it here. You are also promising us that you wrote this yourself, or copied it from a public domain or similar free resource (see Christianpedia:Copyrights for details). Do not submit copyrighted work without permission! Cancel Editing help (opens in new window) Discuss this page