Elaborate evolution by natural selection , Biology

Assignment Help:

Elaborate Evolution by Natural Selection ?

The conelaboratecept of natural selection lies at the heart of Darwin's Theory of Evolution. Darwin understood that plants and animals being raised for food or show in his day were selectively bred, or artificially selected for certain valued traits. Darwin came to understand that environmental factors such as predators, food supply, physical habitat, and climate functioned in much the same way to select and favor specific characteristics or traits. Those organisms within a population that could effectively reproduce in a given environment would be able to reproduce effectively.

Evolution might have occurred as described in the example below. Genetic recombination leads to variation among the individuals of any population, in this case, in the neck length in a population of giraffes. In a changing environment, food resources is consumed in order of accessibility. As food becomes scarce, most giraffes suffer from poor health, or starvation. However, giraffes with longer than normal necks are able to reach more food, and have an advantage in surviving to produce offspring, who are genetically likely to be longer necked as well. Over time, by natural selection, the population evolves into one of longer necked giraffes.

 


Related Discussions:- Elaborate evolution by natural selection

What do you mean by fixation?, What do we mean by fixation? Fixation is...

What do we mean by fixation? Fixation is the process of preserving internal and external structures of microorganisms.  It leads to the killing of microbial cells and their fir

What are the benefits of soil testing, What are the benefits of Soil testin...

What are the benefits of Soil testing Soil testing is done to assess the nutrient supplying capacity of the soil. The data obtained as a result of  testing is useful for recom

Describe airway and respiratory support in heart disease, Describe Airway a...

Describe Airway and Respiratory Support in the Newborn ? Like in any other emergency situation a stable airway needs to be established first. Newborns with severe respiratory d

What is the fluid that fills the nucleus called, Q. What is the fluid that ...

Q. What is the fluid that fills the nucleus called? The aqueous fluid that fills the nuclear region is called nucleoplasm or karyolymph. In the fluid there are enzymes, protein

Inter-relationships of classification, Inter-relationships of Classificatio...

Inter-relationships of Classification The aim of classification is to put together organisms on the basis of their similarities. But the question is what type of similarities?

Transport and facilitated diffusion have in common, Q. What do active trans...

Q. What do active transport and facilitated diffusion have in common? What are the dissimilarity between them? Facilitated diffusion can be perplexed with active transport beca

Fats requirements for ulcerative colitis, Q. Fats requirements for ulcerati...

Q. Fats requirements for ulcerative colitis? Usual foods, which contain fats (invisible or inherent fat), are permitted but not fried foods, as they are not easily digested due

Excretory system, what is the excretory organ of a lizard?

what is the excretory organ of a lizard?

Three irreversible reactions in the glycolytic pathway, Name the three irr...

Name the three irreversible reactions  in the glycolytic pathway. The three irreversible reactions in the glycolytic  pathway are : Glucose → Glucose-6-phosphate Fructose

Name the process in that substances carry across membrane, Substances which...

Substances which are insoluble in a membrane are carried across membrane with concentration gradient by means of a carrier molecule in a process termed as: a) Diffusion. b)

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