We use cookies to give you the best experience possible. By continuing we’ll assume you’re on board with our cookie policy

Charles Darwin’s Theory Essay

Essay Topic: ,

Sorry, but copying text is forbidden on this website!

Charles Darwin contributed to the field of evolutionary biology were: non-constancy of species, branching evolution, occurrence of gradual change in species, and natural selection. Each of his contribution became the foundation of evolutionary biology and can be seen in the wild very commonly. Non-constancy can be observed though variation in the offspring. For example, different sized beaks in finches display variation in the species and therefore, non-constancy. This can cause change in the gene pool of a species over time. Many evidence of branching evolution can be seen in the anatomy of different species like homologies and vestigial structures.

We will write a custom essay on Charles Darwin’s Theory specifically for you
for only $16.38 $13.90/page

Order now

In whales, the hip bones are similar to humans which indicates the common ancestry between the two species. Gradual change is displayed by the fossil records of many species.

Older fossil records have some small differences from the newer fossil records which can be used to prove gradual change in species over time. These changes occur due to mutation and are picked out by the natural selection. These mutations accumulate over time and cause the species to look drastically different after many decades. Natural Selection picks out individuals better suited for the environment and allows them to reproduce and pass on their gene while unsuited individuals die without passing on their gene. Natural selection occurs every time a predator feeds on the weakest, slowest, worst camaflouged, or most un-adapted prey. This allows the gene pool of the species to evolve and shed off undesired genes.

Hardy-Weinberg Equilibrium assumes that the allele frequency stays constant over time. The equation presumes there is no genetic flow, no mutation, no natural selection, random mating, and a large population. Hardy-Weinberg equation is used as a null hypothesis to determine if evolution is occurring in the species. Punctuated Equilibrium shows a sudden change in a species gene pool usually due to an environmental disaster after a long period of no change in the gene pool. This idea is demonstrated by the rise of mammals and the downfall of reptiles and other organisms.

References:

Campbell, Neil, and Reece, Jane. AP EDITION BIOLOGY. San Francisco: Pearson, 2005.

How to cite this page

Choose cite format:

Charles Darwin’s Theory. (2016, Jul 27). Retrieved from https://studymoose.com/charles-darwins-theory-essay

We will write a custom sample essay onCharles Darwin’s Theoryspecifically for you

for only $16.38 $13.90/page
Order now

Our customer support team is available Monday-Friday 9am-5pm EST. If you contact us after hours, we'll get back to you in 24 hours or less.

By clicking "Send Message", you agree to our terms of service and privacy policy. We'll occasionally send you account related and promo emails.
No results found for “ image
Try Our service
online

Hi, I am Sara from Studymoose

Hi there, would you like to get such a paper? How about receiving a customized one? Click to learn more https://goo.gl/CYf83b

online

Hi, I am Sara from Studymoose

Hi there, would you like to get such a paper? How about receiving a customized one? Click to learn more https://goo.gl/CYf83b

image

Your Answer is very helpful for Us
Thank you a lot!