Various definitions of species, Biology

In biology, a species is smallest and basic unit of classification. Each species is placed within a single genus. For example biological name of human being is homosapiens. Here homo is the genus and sapiens is the species of humans.

Earlier species was thought to be an indivisible, stable unit but in modern taxonomy subdivisions of species, such as sub species have been created which help in our understanding of classification.

 

Definition of species

According to ernst mayr"a species is a group of fertile organism that can interbred and produce fertile offspring of both the gender".

The modern concept considers species as a group of actually or potentially inter breeding natural population of closely resembling individuals.  Species can also be defined on the basis of various perspectives, which are as follows.

Morphological: a population or group of population that differ morphologically from each other eg. Chicken-duck.

Biological: a set of actually or potentially inter breeding populations or two organisms that are able to reproduce naturally to produce  fertile offspring of both the genders.

Ecological:  a set of organism adapted to particular set of resources, called a niche, in environment.

Genetic: based on similarity of DNA of individuals or populations.

 

Posted Date: 7/11/2012 5:30:26 AM | Location : United States







Related Discussions:- Various definitions of species, Assignment Help, Ask Question on Various definitions of species, Get Answer, Expert's Help, Various definitions of species Discussions

Write discussion on Various definitions of species
Your posts are moderated
Related Questions
What is Secondary Growth explain briefly? Secondary Growth in Stems : Young developing shoots increase in height by adding new cells, which are produced by the apical meriste

how the blood is circulated with the help of heart

Sample Outline of Child History Questionnaire Basic identifying data: Child's name Date of birth Date of evaluation Person referring for evaluation Per

what is he importance of proteins for living beings

Determine the importance of Educational History- assessment  A complete school history includes information regarding a child's current grade placement, any grade repetitions o

Do moulds need water for growth? Place a spoonful of dry cereal like as rice or oatmeal in a sterile culture dish. Place a like amount of the similar cereal cooked in another c

What are the uses of a barrier membrane is grafting procedures? Uses of barrier membrane in grafting procedures : i) Help in stabilizing the graft ii) Prevents ingrowth

What is Primary Growth in Shoot? The growth in height of a plant stem results from the division of cells at the apex, or tip of the stem, called the shoot tip. Here, a group o

What are the main biological processes in which calcium participates? Calcium is present in almost all cells and has some functions. Calcium has a significant role in muscul

Q. Causes of Diabetic Ketoacidosis? The causes of Diabetic Ketoacidosis (DKA) are the following: - Missing of insulin injection - Infection - Trauma (injury) - Myoc