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

Define the term- brain circuitry underlying addiction, Define the term- bra...

Define the term- brain circuitry underlying addiction By unraveling brain circuitry underlying addiction, scientists have identified new targets for therapies which might quell

Orifices of heart, Atrio-ventricular Orifices The right and left atrio-v...

Atrio-ventricular Orifices The right and left atrio-ventricular orifices are oval apertures. The openings lie in a plane that is almost vertical with a slight downward inclinati

Describe the types of drugs, Describe the types of Drugs • Induction a...

Describe the types of Drugs • Induction agent (thiopentone, fentanyl, ketamine, midazolam) • Suxamethonium (1-2 mg/kg) is the muscle relaxant of choice. Rapid sequence ind

Investigation of aortic regurgitation by chest x–ray, Q. Investigation of a...

Q. Investigation of aortic regurgitation by Chest X–Ray? Left ventricular dilatation produces cardiomegaly on chest radiograph. Ascending aorta is often prominent. Egg shell ca

Explain the properties locust bean gum, Explain the Properties Locust bean ...

Explain the Properties Locust bean gum Locust bean gum is slightly soluble in room temperature water and must be heated to 75 to 85 o C for complete hydration and viscosity dev

Define anaemia in pregnancy, Define Anaemia in Pregnancy? Anaemia is th...

Define Anaemia in Pregnancy? Anaemia is the most common complication and is often compounded by low socio- economic status. However, it is seen frequently in upper income women

Describe the general guidelines for use of bone grafting, General guideline...

General guidelines for use of BONE GRAFTING 1. The surgical site should be prepared, that is it should be free of granulation tissue. 2. For autogenous grafts- the donor sit

What is enteropathogenic escherichia coli, Escherichia coli is generally re...

Escherichia coli is generally regarded as part of the normal flora of the human intestinal tract and that of many animals. Serotypes of E. coli which have been implicated in human

Explain nutritional and functional role of phosphates, Minerals :- Phosphat...

Minerals :- Phosphates Food Source      Ubiquitous, animal products tend to be good sources Nutritional Functional role Essential nutrient: Deficiency is rare due

Biochemical function - essential elements, Biochemical Function - Essential...

Biochemical Function - Essential Elements Elements Mg, Mn, K, Ca and Fe are cofactors for many enzymatic reactions. Fe is carrier of electrons in electron transfer chain. Phos

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