What is speciation, Biology

Assignment Help:

What is speciation?

The Speciation is the process by which different species emerge from a common ancestor species. The Speciation generally begins when populations of the same species become geographically isolated, that is when they are separated by some physical barrier that disallows crossing between individuals from one population and individuals of another population.

A Group that for a long time is kept under geographical isolation tends to accumulate different phenotypical characteristics from each other by means of genetic variability (mutations and recombination) and natural selection and when those differences reach a point that makes the crossing of individuals of one group with individuals of the other group not possible or the generation of fertile offspring no longer happens it is said that speciation has occurred.

 


Related Discussions:- What is speciation

Classification levels of blood pressure, Table gives the current classifica...

Table gives the current classification of hypertension as recommended by JNC VII. The classification is based on the mean of two or more seated readings on two or more occasions.

Explain glycolysis, Explain glycolysis? Name the two monosaccharides w...

Explain glycolysis? Name the two monosaccharides which readily enter the glycolytic pathway. Illustrate a diagrammatic sketch of the microscopic view of a mammalian sperm a

Amazonian butterflies, The Amazon rainforest in South America is a biodiver...

The Amazon rainforest in South America is a biodiverse ecosystem. There are large numbers of plant and animal species making up the food web, including over 350 species of predator

The middle course - classification of the river, The middle course - Classi...

The middle course - Classification of the river The middle course of the river occurs over the foothill belt where the velocity or water is comparatively less which moves a li

What do numeric pyramids represent, What do numeric pyramids represent? ...

What do numeric pyramids represent? Numeric pyramids show the number of individuals in each trophic level of a food chain.

What are the phenotypic ratios, Honeybees are unusual in that male bees (dr...

Honeybees are unusual in that male bees (drones) have only one copy of each gene, while female bees have two copies of their genes. That is because drones develop from eggs that ha

Determine the features of the nervous system of arthropods, What are the no...

What are the noteworthy features of the nervous system of arthropods? In arthropods the nervous system has more complicated sensory receptors with well-advanced cephalization.

Excretory organs, what is the excretory organs of,rat,fish,lizard,frog,cock...

what is the excretory organs of,rat,fish,lizard,frog,cockroach,bird and snail.

Describe the structure of body wall of ascaris, Question 1 Write a short n...

Question 1 Write a short note on the following                           1 Class polychaeta

Effects of long term malnutrition, Effects of long term malnutrition ...

Effects of long term malnutrition The effects of long term malnutrition are more severe in children. Children do not have sufficient amounts of carbohydrates and fats in

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