Hire writer
Paper Types
Disciplines

Reproductive Barriers: Antelopes and Bassett Hounds, Essay Example

Pages: 1

Words: 280

Essay

Prezygotic reproductive barriers are important as they do not waste gametes and also the energy for gestation is not wasted and the subsequent development of the offspring. There are certain barriers which interfere with the fertilization. Prezygotic barriers interfere with the fertilization before the union of gametes and postzygotic barriers act after the unification of the gametes. The prezygotic barriers include the reproductive isolating mechanisms where in the fertilization between members of the different species is prevented. Temporal isolation and habitat isolation are the prezygotic barriers. In temporal isolation two species reproduce at different times of the day, season or year. Habitat isolation involves two potential species living in two different habitats whose ranges overlap and so they do not encounter each other. Behavioral isolation, mechanical isolation and gamete isolation are also considered as prezygotic barriers. Behavioral isolation involves differentiation with the characteristic courtship behaviors. Mechanical isolation occurs when the genital organs are incompatible in different species. Gametic isolation prevents fertilization as the egg and sperm of different species are incompatible (Eldra Solomon, Linda Berg, Diana W. Martin, 2002).

The postzygotic barriers include hybrid inviability, hybrid sterility and hybrid breakdown. Hybrid inviability is reason for the embryonic death. The hybrid offspring of two species do not mature and dies at the embryonic stage. At instances where the hybrid offspring matures normally, the reproduction of these hybrids is not normal due to hybrid sterility. Hybrid breakdown is the reason for the unsuccessful reproduction of the hybrid offspring or the second generation hybrids (Eldra Solomon, Linda Berg, Diana W. Martin, 2002).

 

References:

Eldra Solomon, Linda Berg, Diana W. Martin, 2002, What prevents closely related species from interbreeding, Biology, [Online], Available at: http://163.16.28.248/bio/activelearner/19/ch19c1.html, Accessed on 01.04.2013.

Time is precious

Time is precious

don’t waste it!

Get instant essay
writing help!
Get instant essay writing help!
Plagiarism-free guarantee

Plagiarism-free
guarantee

Privacy guarantee

Privacy
guarantee

Secure checkout

Secure
checkout

Money back guarantee

Money back
guarantee

Related Essay Samples & Examples

Marketing Mix-Cleaning Services, Essay Example

Marketing Management: The Kindle This paper gives an analysis of the four cardinal components of the marketing mix and looks at how these components can [...]

Pages: 1

Words: 937

Essay

Drivers and Human Psyche, Essay Example

Psyche is the human mind or soul. It is the human personality that influences the way he/she behaves and how he makes decisions, for example [...]

Pages: 1

Words: 387

Essay

Law and Morals, Essay Example

We are dealing with the case of Dudley and Stephens that became a precedent in 1884.  After years of debates about the issue of a [...]

Pages: 1

Words: 344

Essay

Educating the Herd, Essay Example

From earliest childhood, I can remember my parents telling me how lucky I was to go to school in America.  Recieving a private, catholic school [...]

Pages: 1

Words: 667

Essay

Discussions on Identified Ethical Principles, Essay Example

When is it acceptable to refuse an assignment? That nurses reserve a right to refuse an assignment is a well-known fact, but to make such [...]

Pages: 1

Words: 730

Essay

My Last Duchess, Essay Example

 “My Last Duchess” by Robert Browning Initially published in “Dramatic Lyrics” collection, poem “My Last Duchess” is a remarkable example of Robert Browning’s usage of [...]

Pages: 1

Words: 904

Essay

Marketing Mix-Cleaning Services, Essay Example

Marketing Management: The Kindle This paper gives an analysis of the four cardinal components of the marketing mix and looks at how these components can [...]

Pages: 1

Words: 937

Essay

Drivers and Human Psyche, Essay Example

Psyche is the human mind or soul. It is the human personality that influences the way he/she behaves and how he makes decisions, for example [...]

Pages: 1

Words: 387

Essay

Law and Morals, Essay Example

We are dealing with the case of Dudley and Stephens that became a precedent in 1884.  After years of debates about the issue of a [...]

Pages: 1

Words: 344

Essay

Educating the Herd, Essay Example

From earliest childhood, I can remember my parents telling me how lucky I was to go to school in America.  Recieving a private, catholic school [...]

Pages: 1

Words: 667

Essay

Discussions on Identified Ethical Principles, Essay Example

When is it acceptable to refuse an assignment? That nurses reserve a right to refuse an assignment is a well-known fact, but to make such [...]

Pages: 1

Words: 730

Essay

My Last Duchess, Essay Example

 “My Last Duchess” by Robert Browning Initially published in “Dramatic Lyrics” collection, poem “My Last Duchess” is a remarkable example of Robert Browning’s usage of [...]

Pages: 1

Words: 904

Essay