Posted by admin | Posted in Uncategorized | Posted on 27-01-2010
Tags: 1506, chinese_flame_tree, ebay, golden rain tree koelreuteria paniculata, grove, koelreuteria golden, koelreuteria golden rain, koelreuteria golden rain tree, to_grow
Koelreuteria Golden
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its related to the soapberry bugs,koelreuteria elegans,cardiospermum corundum?
There are two distinct population of soapberry bugs in florida those that live off flat podded golden rain tree fruits (k.elegans) and those that live off of large fruited baloon vines(C. corundum)
a). describe the likely selection pressures that would result in a change in the soapberry bug beak lengths
speculate as to whether or not the newer ,short beaked soapberry bug population can or will be considered a different species.Comment on what criterion would need to be satisified before an assertion of this case as speciation in action could be made.....
I would have thought that theres something about the beak lengths and the foods they eat.
A species consists of individual organisms which are very similar in appearance, anatomy, physiology and genetics due to having relatively recent common ancestors. Traditionally, multiple examples of a proposed species must be studied for unifying characters before it can be regarded as a species.
Problems in Classifying Organisms
Listing characteristics that distinguish one species from another has the effect of making it appear that the species and their distinctive attributes are fixed and eternal. We must always keep in mind that they were brought about by evolutionary processes that operated not merely at some time in the distant past, but which continue to operate in the present and can be expected to give rise to new forms in the future. Species are always changing. As a consequence, they are essentially only a somewhat arbitrarily defined point along an evolutionary line.
It is also important to realize that most species are physically and genetically diverse. Many are far more varied than humans. When you think of an animal, such as the jaguar shown here, and describe it in terms of its specific traits (fur color patterns, body shape, etc.), it is natural to generalize and to think of all jaguars that way. To do so, however, is to ignore the reality of diversity in nature.
Another problem in classifying a newly discovered organism is in determining the specific characteristics that actually distinguish it from all other types of organisms. There is always a lively debate among researchers over defining new species because it is not obvious what are the most important traits. There are two schools of thought in resolving this dilemma. The first defines new species based on minor differences between organisms. This is the splitter approach. The second tends to ignore minor differences and to emphasize major similarities. This lumper approach results in fewer species being defined.
This isn't a great answer but I hope it helped a bit. By the way, nice point hunting to the person above....



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