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 is folic acid, What is folic acid? Why is the anemia caused by deficie...

What is folic acid? Why is the anemia caused by deficiency of folic acid known as megaloblastic anemia? The folic acid (when ionized it is known as folate) is a coenzyme that

Genotypically and phenotypically, 1. In the human, normal pigmentation ( A ...

1. In the human, normal pigmentation ( A ) is dominant to albinism ( a ). What results would be expected from the following matings, both genotypically and phenotypically? AA x

Agro industrial-soaking, Soaking Soaking is an another inexpensive proc...

Soaking Soaking is an another inexpensive processing method, which does not require much technical know how, is commonly practiced for improving the palatability of chaffed cro

Explain xylose isomeras, Explain xylose isomeras A mixture of glucose ...

Explain xylose isomeras A mixture of glucose and fructose, is produced from sucrose by the action of yeast invertase (β-fructofuranosidase), an enzyme which can only be extrac

Digestive system, describe secretory function of salivary gland

describe secretory function of salivary gland

Describe coping skills, Have you ever said, ‘I cannot cope up with this?' O...

Have you ever said, ‘I cannot cope up with this?' Or have you heard any one who is sick in your family saying, ‘I cannot cope with my sickness' or ‘I can not take care of this sick

dna repair, is mismatch repair something different from proofreading

is mismatch repair something different from proofreading?

Vitamin a requirements of school children and adolescents, Determine Vitami...

Determine Vitamin A requirements of school children and adolescents? The vitamin A requirement of children and adolescents has been computed from growth curve interpolation dat

Determine general principles of allergy management, Determine General Princ...

Determine General Principles of Allergy Management? The four general principles of allergy management include: 1.  Avoid factors that cause symptoms. 2.  Use appropriate

Explain the relative nucleotide content of each sample, Can you help explai...

Can you help explain this question in fairly simple terminology? A certain sample of DNA has a Tm of 65oC, while another has a Tm of 58oC. What can you tell about the relative n

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