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Say a sparrow and a bluejay, etc.???

2007-01-26 03:03:18 · 5 answers · asked by Anonymous in Science & Mathematics Zoology

So, what I'm trying to figure outis, why do human breeds innerbreed with other human breeds??? Wouldn't this be agenetic problem also, later in life???

2007-01-26 03:22:07 · update #1

5 answers

Recently a red-tailed buzzard and a harris hawk bred naturaly, although in captivity they were breeding together. Unfortunatly the ofspring have started to develop problems and are geneticaly falling to bits because it is not natural.

2007-01-26 11:47:55 · answer #1 · answered by Aquila 4 · 0 0

no not in the wild, but certain kinds of ducks can interbreed with other kinds of ducks and certain kinds of chickens can interbreed with other kinds of chickens.

Species are distinctly different kinds of organisms. Birds of one species are, under most circumstances, incapable of interbreeding with individuals of other species. Indeed, the "biological species concept" centers on this inability to successfully hybridize, and is what most biologists mean by "distinctly different." That concept works very well when two different kinds of birds live in the same area. For example, Townsend's and Yellow-rumped Warblers are clearly distinct kinds because their breeding ranges overlap, but they do not mate with one another. If they did, they might produce hybrid young, which in turn could "backcross" to the parental types, and (eventually) this process could cause the two kinds of warblers to lose their distinctness.

On the other hand, when relatively similar populations occur in different areas, it is much more difficult to decide whether to classify them as different species. For example, the western populations of the Yellow-rumped Warbler (which have yellow throats) were previously considered a species, Audubon's Warbler, distinct from the eastern Myrtle Warblers (which have white throats), largely because of differences in appearance. Then it was discovered that the breeding ranges of Audubon's and Myrtle Warblers overlap broadly in a band from southeastern Alaska through central British Columbia to southern Alberta, and that the two "species" hybridize freely within this area. The forms intergrade, and taxonomists now consider them to be subspecies of a single species, the Yellow-rumped Warbler. Subspecies are simply populations or sets of populations within a species that are sufficiently distinct that taxonomists have found it convenient to formally name them, but not distinct enough to prevent hybridization where two populations come into contact.

2007-01-26 11:11:42 · answer #2 · answered by Lane 4 · 0 0

certain species of birds have been known to interbreed. most commonly duck species. some do not have to be of the same genus last year there was a case of a swallow breeding with a house martin. but cases like this are extremely rare.
humans can interbred because we are al of the same genus Homo sapiens. indeed its good for the gene pool when different races mix. its just racist bigots who will tell you different. so stay away from them as most are so in bred they have truly bad genes.

2007-01-26 13:49:34 · answer #3 · answered by Anonymous · 0 0

No, genetically impossible. There are some birds that can interbreed producing a hybrid...but these birds have to be very closely related having the same genus. (such as two warbler species)

2007-01-26 11:12:04 · answer #4 · answered by Anonymous · 0 0

"Breeds" of humans -- hey, we are ALL just humans around here, no separate "breeds" around -- just color variants! Like hawks that come in dark and light morphs.

2007-01-26 12:02:03 · answer #5 · answered by Yahzmin ♥♥ 4ever 7 · 1 0

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