Explain the lamarcks theory in evolution, Biology

Assignment Help:

Explain the Lamarck's Theory in evolution?

Prior to Darwin, most people believed in and held to the creationist viewpoint that species were created in their current forms, which have not changed. In 1809, Jean Baptiste Lamarck proposed a new theory of evolution. He used the fossil record to explain how different adaptations arose.

Lamarck's theory incorporated the following ideas. He thought that organisms had an "inner need" to become better adapted to their environments. This, he thought, would explain the trend that organisms had toward greater and greater complexity observed in the fossil record. Secondly, Lamarck, along with others, felt that organisms are able to gradually lose characteristics that were not used over time, and further, that they could develop those characteristics that were "needed" to aid in their survival. Lastly, Lamarck thought that these newly acquired characteristics, or traits, could be passed on to future generations - this came to be known as the inheritance of acquired traits.

Today, of course, we know that there is no evidence that supports Lamarck's theory. Increasing muscle mass and strength by exercise does not alter the gene that carries that trait. This means that a runner who trains and develops running prowess is not able to pass on acquired increased muscle mass and strength to his or her offspring. Although Lamarck's Theory was ultimately replaced, Lamarck is still credited with formulating a plausible theory that was accepted by many.

 

 


Related Discussions:- Explain the lamarcks theory in evolution

Plants are supplied with adequate amount of phosphorus, Plants are supplied...

Plants are supplied with adequate amount of phosphorus Phosphorus has also been associated with early maturity of crops particularly the cereals. Its shortage is accompanied by

Determine the estimation of minerals in foods, Estimation of minerals in fo...

Estimation of minerals in foods The minerals in foods are determined by ashing or incineration at temperatures in the region of 500°C following standard procedure. This destroy

Efficiently generate and amplify cdna, Your methods so far have given some ...

Your methods so far have given some success! You now want to look at many different tissues in several individuals, some of whom have the mutation, some who are controls. How can y

Explain the aseptic technique - sub culturing, Explain the Aseptic Techniqu...

Explain the Aseptic Technique - Sub Culturing? Aseptic technique is a series of procedures used to prevent contamination of cultures and sterile culture media. It is one of the

Amoeboid movement, Normal 0 false false false EN-IN X...

Normal 0 false false false EN-IN X-NONE X-NONE MicrosoftInternetExplorer4

Bio-security in relation to diseases, B i o-security in relation to disea...

B i o-security in relation to diseases Bio-security is a strategic and integrated approach encompassing policy and regulatory frameworks to analyze and manage risks in the se

How do the products of meiosis i differ from of meiosis ii, How do the prod...

How do the products of meiosis I differ from those of meiosis II? In meiosis I, the offspring cells are haploid but every cell contains two copies of the chromosome because th

Which molecules has more direct effect, Which of the following molecules ha...

Which of the following molecules has more direct effect in learning and memory? A) norepinephrine B) epinephrine C) glutamate D) acetylcholine E) glycine Please leave justification

Mendel''s yellow peas, A plant grown from one of Mendel's yellow peas is se...

A plant grown from one of Mendel's yellow peas is selfed. Five progeny peas are obtained from this self and they are all yellow. If the original selfed plant had been homozygous, w

Need help!!!, im stuck on this question where we have to make a table of av...

im stuck on this question where we have to make a table of averages using quadrats and transect lines can you help me?

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