Natural selection, Biology

Assignment Help:

Darwin put fort the notion of the survival of the fittest. How do we define 'fittest'? The answer usually given is those who survive. So you can readily see that this is a circular agrument and doesn't really help us understand what really happens following natural selection quite clearly. The idea of fitness as a matter of survival will not do. Therefore in the course of the development of what we have earlier referred to as the modern synthesis the notion of fitness was related to the ability of the individual to maximise the number of progeny left in the next generation. In other words the notion of fitness was translated into reproductive success. Given the idea of fitness as being measurable in terms of reproductive success we can now go back to basic tenets of Darwinism. The first of the five observations mentioned therein was the tendency on the part of living organisms to reproduce: In an exponential manner. We noted that the consequence of this is competition for available resources which results in "the survival of the fittest" Clearly, therefore. in3terms of reproductive ability nature is truly prodigal.


Related Discussions:- Natural selection

Give three examples of cell structures, Give three examples of cell structu...

Give three examples of cell structures which contain structural proteins. What is the other type of protein in a cell? (a) Cytoplasm, the cell membrane, memb

What is venous hum in heart dieases, What is Venous Hum in heart dieases? ...

What is Venous Hum in heart dieases? Characteristic: Continues sound with diastolic component often a higher pitched and louder than the systolic, best heard just above the c

Kingdom protoctista, dinstictive characteristics,classes of the kindom

dinstictive characteristics,classes of the kindom

Twins, how twins are produced and why

how twins are produced and why

What are the vitamins which make up the b complex, Q. What are the vitamins...

Q. What are the vitamins which make up the B complex? Which problems does the lack of these vitamins cause? Vitamins of the B complex are: vitamin B1 or thiamin, riboflavin, or

List the types of gellan gum, List the types of Gellan gum.   The three...

List the types of Gellan gum.   The three types of gellan gums are: High acetyl gellan (partially deacetylated) Low acetyl gellan (highly deacetylated) High cl

Which hormones stimulate glycogenolysis, Which hormones stimulate glycogeno...

Which hormones stimulate glycogenolysis? Glucagon  in liver and epinephrine  in liver  and muscle stimulate glycogenolysis.

Explain the different types of cells in cell structure , Explain the differ...

Explain the different types of cells in cell structure ? Types of Cells :  Cells can be classified as being either prokaryotic or eukaryotic depending on whether or not a mem

Types of hormones, T ypes of hormones - (i) Releasing and Inhibitory ...

T ypes of hormones - (i) Releasing and Inhibitory hormones - Hormones of hypothalamus and kidney (renin) which control secretion of trophic hormones. (ii) Trophic hormon

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