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

Use of toxic amino acids, Q. Explain Use of Toxic amino acids? Lathyru...

Q. Explain Use of Toxic amino acids? Lathyrus sativus (kesari dhal) seeds contain toxic amino acid beta-oxalyl aminoalanine (BOAA), is considered to be responsible

Centrolecithal egg, which type of cleavage takes place in centrolecithal eg...

which type of cleavage takes place in centrolecithal egg

Define two major aspects of nutrition economics, Define two major aspects o...

Define two major aspects of nutrition economics? There are two major aspects of nutrition economics. These aspects are: 1) Quantities of food commodities and their developme

Suberin, SUBERIN It is a lipid formed by esterification of phellonic ac...

SUBERIN It is a lipid formed by esterification of phellonic acid or its derivative with glycerol. Suberin occurs in the walls of cork cells and endodermal cells. It makes

Explain about the biofertilizers, Explain about the Biofertilizers Biof...

Explain about the Biofertilizers Biofertilizers, are the cultures of microorganisms used for inoculating seed or soil or both under ideal conditions to increase the availabilit

How computed tomography helps the doctors, Explain briefly how computed tom...

Explain briefly how computed tomography (CT) helps the doctors in pinpointing the defects in the patient's body

Nutrition occurs in protozoans, Nutrition occurs in Protozoans All typ...

Nutrition occurs in Protozoans All types of nutrition occur in Protozoa. Some protozoans synthesize their own food from inorganic precursors (carbon dioxide, nitrates or ammon

Effect on microbial growth and activity, Effect on Microbial Growth and Act...

Effect on Microbial Growth and Activity Bacteria require higher aw for growth than fungi. Gram-negative bacteria have higher requirements than gram positives. Most spoilage ba

Pethidine and methadone, PETHIDIN E - Meperidine hydrochloride. ...

PETHIDIN E - Meperidine hydrochloride. Widely used as narcotic analgesic. It has local anesthetic action. METHADON E - It is an orally effective anal

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