http://yedda.com/questions/environment_735367118238370/?src=rss:qb:qbsThis is a question for the biology experts. We are ...en-ushttp://static1.yeddacdn.com/images/Logo132X46_rmt9c1d22d.jpghttp://yedda.com/questions/environment_735367118238370/?src=rss:qb:qbsThis is a question for the biology experts. We are ...http://yedda.com/questions/environment_735367118238370/?src=rss:qb:qbi<p>This is a question for the biology experts. We are told that thousands of species go extinct every year. Are new species replacing them?</p>LidoLidomale77questionMon, 19 Oct 2009 02:17:12 GMThttp://yedda.com/questions/environment_735367118238370/?src=rss:qb:qbihttp://yedda.com/questions/environment_735367118238370/Hardly_nbsp_New_species_arise_495494437118113?src=rss:qb:qbi<p>Hardly.  New species that arise through mutations are far, few, and in between, and never will come close to replacing species that are lost every year.  New species that arise through cross-breeding between two species are usually sterile, and are evolutionary dead-ends.</p>IamjustcuriousIamjustcuriousmale41answer4.0Mon, 19 Oct 2009 03:39:25 GMThttp://yedda.com/questions/environment_735367118238370/Hardly_nbsp_New_species_arise_495494437118113?src=rss:qb:qbihttp://yedda.com/questions/environment_735367118238370/http_en_wikipedia_org_wiki_504187273713097?src=rss:qb:qbi<p>http://en.wikipedia.org/wiki/Background_extinction_rate</p>Jay aka EETJay aka EET54answer3.0Mon, 19 Oct 2009 05:40:18 GMThttp://yedda.com/questions/environment_735367118238370/http_en_wikipedia_org_wiki_504187273713097?src=rss:qb:qbihttp://yedda.com/questions/environment_735367118238370/Speciation_creation_new_species_862807052133076?src=rss:qb:qbi<p>Speciation (the creation of new species) is actually not that hard. It is particularly common among plants and insects. But that doesn't say much. All it takes to create a new species is one barrier that prevent successful mating between two parts of a species be it physical distance, a new variation on the mating ritual, one mutated enzyme in the reproductive system, or even an accidental change in the way its DNA is packaged into chromosomes and a new species is formed. But these species add very little to the diversity of life on the planet. It takes time, thousands of years of it to produce even small changes between such separated populations.</p>QuestionMarkQuestionMarkmale29answer3.0Thu, 22 Oct 2009 13:03:16 GMThttp://yedda.com/questions/environment_735367118238370/Speciation_creation_new_species_862807052133076?src=rss:qb:qbi