Post-mating isolating mechanisms, Biology

Assignment Help:

The second category of isolating mechanism that may permit interspecific mating but ensures reduced viability is called post-mating isolating mechanism. This category could be subdivided into two types.

Interspecific steiility : Organisms belonging to different species may mate, but may not produce any offspring.

Hybrid sterility : Here the interspecific cross may result in an F1 offspring but the offspring is invariably sterile.

We shall now briefly look into each one of these sterility mechanisms with plant and animal examples.


Related Discussions:- Post-mating isolating mechanisms

Define criteria for assessment of vitamin d status, Define Criteria for Ass...

Define Criteria for Assessment of Vitamin D Status? You may recall the events involved in calcium homeostasis described earlier in this section. We studied that sufficient 25-O

How plants control opening and closing of the stomata, How plants control t...

How plants control the opening and the closing of the stomata? The closing and the opening of the stomata depend upon the necessity of the plant to lose water and heat through

What are some evolutionary advantages of animals, What are some evolutionar...

What are some evolutionary advantages of animals with complete digestive tube? The complete digestive tube permits animals to continuously feed themselves without waiting for r

What are the major factors of colloidal dispersion, What are the major fact...

What are the major factors of colloidal dispersion The adsorption of ions by colloidal particles is a major factor in stabilizing a colloidal dispersion, since the colloidal pa

Explain the dispersed phase of colloidal system, Explain the dispersed phas...

Explain the dispersed phase of colloidal system Colloidal systems are not restricted to the dispersion of a solid in liquid.  Each of the three states of matter - gaseous, soli

Which hormones stimulate glycogenolysis, Which hormones stimulate glycogeno...

Which hormones stimulate glycogenolysis? Glucagon  in liver and epinephrine  in liver  and muscle stimulate glycogenolysis.

What is osmotic pressure, Q. What is Osmotic Pressure? Ans. Import...

Q. What is Osmotic Pressure? Ans. Important characteristic of a cell is 'osmosis'. You would recall reading about osmosis in the Applied Physiology Course in Unit 8. I

Palaeontological evidence of evolution, EVIDENCES OF EVOLUTION - The ev...

EVIDENCES OF EVOLUTION - The evidences of organic evolution derived from many lines of study indicate that present day forms have arisen by gradual changes from pre existing fo

Class of mollusca - monoplacophora, Class of Mollusca - Monoplacophora ...

Class of Mollusca - Monoplacophora Bilaterally symmetrical, with broad flat foot and single shell, mantle cavity has five to six pairs of gills; six pairs of nephridia of whi

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