What is a gene?: [Essay Example], 402 words GradesFixer
exit-popup-close

Haven't found the right essay?

Get an expert to write your essay!

exit-popup-print

Professional writers and researchers

exit-popup-quotes

Sources and citation are provided

exit-popup-clock

3 hour delivery

exit-popup-persone
close
This essay has been submitted by a student. This is not an example of the work written by professional essay writers.

What is a gene?

  • Category: Science
  • Subcategory: Genetics
  • Topic: Dna, Gene
  • Pages: 1
  • Words: 402
  • Published: 11 December 2018
  • Downloads: 35
Print Download now

Pssst… we can write an original essay just for you.

Any subject. Any type of essay.

We’ll even meet a 3-hour deadline.

Get your price

121 writers online

blank-ico
Download PDF

“Explainer: What is a gene?” by The Conversion is an article with the purpose of defining and clarifying misconceptions about the term gene. The Human Genome Nomenclature Organization defines a gene as “a DNA segment that contributes to phenotypic function.”

There are many genes on each human chromosome: about 20,000 genes encoding proteins and perhaps as many encoding functional RNAs. There is no precise number because it is hard to be sure which segments of DNA read into functional products. The Austrian monk Gregor Mendel carried out the first genetic experiments in the 1850s and he showed that distinct characteristics were inherited and encoded by genes. But he never used the word “”gene”” and neither did Darwin. It was first used in 1909 by Danish botanist Wilhelm Johnannsen to refer to determiners for precise properties of organisms.

The idea that genetic material was linear was born in 1915 by American geneticist Thomas Morgan found that some genes tended to be co-inherited. He deduced it might mean that certain genes were close together, like beads on a string. But genes were still ambiguous. In the 1940s, American physician Oswald Avery discovered and proved that an enzyme that chews up DNA, DNase, could destroy genes. It was concluded, then, that the genetic material was DNA. In 1953, James Watson, Francis Crick, and Maurice Wilkins using data from Rosalind Franklin showed DNA was found in the form of a double helix. This data helped proved that fact that DNA could be replicated.

What does carrying the gene for breast cancer mean? It doesn’t mean a special gene has evolved with the function of causing breast cancer. It means a gene made for limiting cellular doubling in breast tissue or in DNA support is mutated and no longer functions. So the chance of cancer growth is increased. The gene predisposes the carrier to cancer – it doesn’t cause it. The gene for hemophilia is not there to cause bleeding; it’s a gene that, when mutated, results in a defective clotting factor and bleeding is the result. There are several genes for breast cancer and there are two common genes for hemophilia. The most confusing thing is that the “gene for breast cancer” may have an indirect relationship to the biology of the breast.

With the discovery of new information and the creation of new technologies, humans can improve their knowledge of the vast genomic wonderland and discover new unknown genes.

Remember: This is just a sample from a fellow student.

Your time is important. Let us write you an essay from scratch

100% plagiarism free

Sources and citations are provided

Cite this Essay

To export a reference to this article please select a referencing style below:

GradesFixer. (2018, December, 11) What is a gene? Retrived December 10, 2019, from https://gradesfixer.com/free-essay-examples/what-is-a-gene/
"What is a gene?" GradesFixer, 11 Dec. 2018, https://gradesfixer.com/free-essay-examples/what-is-a-gene/. Accessed 10 December 2019.
GradesFixer. 2018. What is a gene?, viewed 10 December 2019, <https://gradesfixer.com/free-essay-examples/what-is-a-gene/>
GradesFixer. What is a gene? [Internet]. December 2018. [Accessed December 10, 2019]. Available from: https://gradesfixer.com/free-essay-examples/what-is-a-gene/
close

Sorry, copying is not allowed on our website. If you’d like this or any other sample, we’ll happily email it to you.

By clicking “Send”, you agree to our Terms of service and Privacy statement. We will occasionally send you account related emails.

close

Thanks!

Your essay sample has been sent.

Want us to write one just for you? We can custom edit this essay into an original, 100% plagiarism free essay.

thanks-icon Order now
boy

Hi there!

Are you interested in getting a customized paper?

Check it out!
Having trouble finding the perfect essay? We’ve got you covered. Hire a writer

GradesFixer.com uses cookies. By continuing we’ll assume you board with our cookie policy.