Homomorphic types - intra specific incompatibility, Biology

Assignment Help:

Homomorphic Types - Intra specific Incompatibility

It is characterized by morphologically indistinguishable mating types within a species. A proper breeding is required for their recognition. This kind of incompatibility operates in more than 250 genera belonging to 71 families of angiosperms. It operates through multiple alleles (as many as 45 alleles are already reported from 500 plants) of S-gene. Pollen grains with one S-allele common with one or both S-allele/s of pistil is incompatible, it is therefore conceivable that on pollen side the haploid gametophyte controls incompatibility. The S-allele my express a relationship of dominance or independence in pollen and/or pistil.


Related Discussions:- Homomorphic types - intra specific incompatibility

Concept of digestion in the stomach, Digestion in the Stomach To unders...

Digestion in the Stomach To understand  the digestion mechanism  in the stomach, it is important to know about the anatomy of the stomach. Look up Unit 6, in the Applied Physio

Investigation of aortic regurgitation by electrocardiogram, Q. Investigatio...

Q. Investigation of aortic regurgitation by Electrocardiogram? Electrocardiogram shows left ventricular dominance with voltage criteria for left ventricular hypertrophy. In mod

Indications for surgery-pericardial diseases, Indications for Surgery :  O...

Indications for Surgery :  Once diagnosis of constrictive pericarditis is made and confirmed by chest X-ray, ECG, echocardiogram, CT, MRI scan, cardiac catheterisation and angio,

Determine the nutritional and functional role of bromine, Minerals : Bromin...

Minerals : Bromine                 Food Source       Brominated flour  Nutritional Functional role Not known to be essential to humans. Dough improver: KBrO 3 impr

The non-oxidative phase generates ribose precursors, The non-oxidative ph...

The non-oxidative phase  generates  ribose precursors The non-oxidative phase of  the pathway,  including the following reactions, converts pentose-5-phosphate to other sugars.

What is osseointegration in macroscopic biomechanical, Q. What is Osseointe...

Q. What is Osseointegration in macroscopic biomechanical? A fixture is osseointegrated if there is no progressive relative motion between the fixture and surrounding living bon

Healthcare delivery - risk pooling, Normal 0 false false fa...

Normal 0 false false false EN-IN X-NONE X-NONE MicrosoftInternetExplorer4

Counselling at diagnosis, Q. Counselling at Diagnosis? A newly diagnose...

Q. Counselling at Diagnosis? A newly diagnosed case of diabetes will have lots of questions and will be confused regarding the treatment and complications of the diabetes. It i

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