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

Explain renal insufficiency, Renal insufficiency  Antimicrobial drugs e...

Renal insufficiency  Antimicrobial drugs excreted through the urinary tract may be toxic for patients with renal insufficiency if they are given in usual therapeutic doses, bec

Food might become contaminated by harmful bacteria, Three ways in which foo...

Three ways in which food might become contaminated by harmful bacteria. Food may become contaminated:- (i) from the unwashed hands of a food-handler, (ii) by house- flies

The biomass available for consumption by the herbivores, The biomass availa...

The biomass available for consumption by the herbivores and the decomposers is called : 1. Net primary productivity 2. Secondary productivity 3. Standing crop 4. Gross

Vitality and vigour - qualitative characters, Vitality and Vigour - Qualita...

Vitality and Vigour - Qualitative Characters Vitality is related to the condition of a plant and its capacity to complete its life cycle, while vigor refers more specifically

What is the function other than protection of the ribs, What is the functio...

What is the function, other than protection, of the ribs? The ribs help to alter the volume of the thorax during breathing movements.

Exploitation of forests, Exploitation of Forests Exploitation of our f...

Exploitation of Forests Exploitation of our forests for commercial purposes and for food and fodder cannot be stopped completely because of symbiotic relationship between fore

Food texture and gas formers, Q. Food texture and Gas formers? Food tex...

Q. Food texture and Gas formers? Food texture: Recent studies indicate that strict omission of fibre is of no help on a peptic ulcer patient. The recurrence of peptic ulcer was

The fragility of erythrocytes, The fragility of erythrocytes The fragil...

The fragility of erythrocytes The fragility of erythrocytes is impaired in the absence of NADPH generation due to the deficiency of glucose-6-phosphate dehydrogenase thereby ca

Gene targeting, Gene targeting: There is always a debate on gene integrat...

Gene targeting: There is always a debate on gene integration in to the host animal. It is random gene integration Vs gene targeting. Perhaps most significantly, pro-nuclear in

Lumpy skin disease, Lumpy skin disease The disease, reported from Suda...

Lumpy skin disease The disease, reported from Sudan in 1970 and Egypt in 1988, is caused by a member of the Capripox virus. It affects cattle and is restricted to African coun

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