Biological species concept, Biology

Assignment Help:

The biologicaI species concept claims that species consist of natural populations and that species are real and objective. They are not man-made subjective abstraction.

According to this concept, the members of a species are a reproductive community. The species is also an ecological unit. It interacts as a unit with other species with which it shares the resources of the environment. The species is also a gene pool. These aspects of the biological species concept are made clear in the famous definition of the Harvard evolutionist Ernst Mayr. According to Mayr, "Species are groups of interbreeding natural populations that are reproductively isolated from other such groups". The biological species is not only a distinct unit at any given time, but it also has the evolutionary capacity to change continuously over long periods of time, measured in millions of years.


Related Discussions:- Biological species concept

Explain coronaw artery disease, Explain CORONAW ARTERY DISEASE (CAD)? A...

Explain CORONAW ARTERY DISEASE (CAD)? As far as CAD is concerned the people of South Asian region are at a very disadvantageous position. The term 'South Asians' includes perso

Would this drug have negative side effect, Release of lysosomal enzymes fro...

Release of lysosomal enzymes from white blood cells during a local immune attack can contribute to the symptoms of inflammation. Suppose, to alleviate inflammation, you develop a d

Define the dietary requirements of phosphorus, Define the Dietary Requireme...

Define the Dietary Requirements of phosphorus? We read in the previous section that the requirements of phosphorus are closely linked with those of calcium. The phosphorus req

Define instrument for absorbed radiation - spectrophotometer, Define Instru...

Define Instrument for Absorbed Radiation - Spectrophotometer? In contrast to colorimeter, spectrophotometer is an instrument that is capable of splitting the incident radiation

Indications for surgery-mixed tricuspid stenosi , Indications for Surgery: ...

Indications for Surgery:  In a mixed lesion, either regurgitation or stenosis may be dominant and decision of surgery depends on the haemodynarnics. At the time of surgery on othe

Why is it hard to produce vaccines against dengue and aids, Q. Why is it di...

Q. Why is it difficult to produce efficient vaccines against a viral infection like dengue and AIDS? It is difficult to make vaccines for dengue because there are four differen

Explain the bioelectrical impedance analysis (bia), Explain the Bioelectric...

Explain the Bioelectrical impedance Analysis (BIA)? The difficulty of measuring total body water (TBW) by Isotope Dilution Method led to the search of Bioelectrical Impedance A

Proximal end of his right femur, In Reggie's case, he fractured the proxima...

In Reggie's case, he fractured the proximal end of his right femur, an integral component of his hip. Name the joint disorders that Reggie is more a risk of in (a) the short term a

Define theophrastus of eresus - taxonomy, Define Theophrastus of Eresus - T...

Define Theophrastus of Eresus - Taxonomy The Father of Botany (370-285 B.C.); of all the men who ever lived upon the earth certainly one of the most remarkable was Theophrastu

What is meant by the arch reflex, Q. What is meant by the arch reflex? ...

Q. What is meant by the arch reflex? In some situations the movement of the skeletal striated muscles does not depend upon commands of the superior motor neurons that it is not

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd