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

Describe about sex determination systems, Besides the XY system are there o...

Besides the XY system are there other sex determination systems? Some animals have a sex determination system dissimilar from the XY system. The X0 system is the sex determi

What is the requirements of dental implants, Requirements of Dental implant...

Requirements of Dental implants Dental implants require special oral hygiene techniques. The particular technique chosen often depends upon the prosthesis.  A removable prosth

What is the importance of vitamin k, What is the Importance of Vitamin K ...

What is the Importance of Vitamin K The site of action of vitamin K activity is the highly complex mechanism of blood coagulation. Due to its effect on prothrombin, vitamin K i

Termination and follow-up in diabetes mellitus, Q. Termination and Follow-u...

Q. Termination and Follow-up in diabetes mellitus? After plan is implemented, you have to assess the progress. Slowly start winding up the contact with the client and the famil

What is the endoplasmic reticulum, What is the Endoplasmic Reticulum Th...

What is the Endoplasmic Reticulum The cytoplasm of most eukaryotic cells contains a very complex network of internal membranes, called the endoplasmic reticulum, which forms ch

Ecosystems, what is biodiversity?where are ecosystems with the highest biov...

what is biodiversity?where are ecosystems with the highest bioversityfound?

How different is the gametogenesis in men and in women, Q. Concerning event...

Q. Concerning events during the periods of life how different is the gametogenesis in men and in women? The formation of spermatogonia in men takes place during the embryonic p

Explain hepatitis a, Hepatitis A Hepatitis A vaccine (Havrix - GlaxoSm...

Hepatitis A Hepatitis A vaccine (Havrix - GlaxoSmithKline; Vaqta Merck) is recommended for all susceptible travelers going anywhere other than Canada, Australia, New Zealand,

Explain neurologic disease, Explain Neurologic disease For patients wit...

Explain Neurologic disease For patients with facial nerve palsy alone, oral doxycycline or amoxicillin may be effective. Patients with other neurologic involvement, such as men

What is meant by mutualist exploration, What is meant by "mutualist explora...

What is meant by "mutualist exploration of cellulose digestion", a phenomenon that occurs in some mammals and insects? Herbivorous animals eat great amounts of cellulose, a sub

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