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

Circulatory system - developmental changes, Circulatory System - Developmen...

Circulatory System - Developmental Changes We have learnt that throughout foetal life, gas exchange takes place, only through the placenta and not through lungs. Therefore, t

What is atrial fibrillation, Q. What is Atrial Fibrillation ? As the le...

Q. What is Atrial Fibrillation ? As the left atrial size increase and atrial wall gets fibrosed, depolarization wave fronts get fragmented and atrial fibrillation sets in. Atri

Triple fusion, Triple Fusion The fusion process between the other male...

Triple Fusion The fusion process between the other male gamete and the secondary nucleus follows the same pattern as syngamy. In most plants, the polar nuclei are only partial

Combination of meat products, C o mbination of meat products Combinin...

C o mbination of meat products Combining meats and byproducts of different species to produce value added products results in complementation and supplementation of their qua

Logical order in which molecules-atoms are associated, Q What is the logica...

Q What is the logical order in which the concepts of molecules, atoms, cells... up to biosphere are associated? Atoms form molecules that form cells that form tissues that form

Define the obesity in children, Define the Obesity in Children? It is d...

Define the Obesity in Children? It is difficult to measure overweight or obesity in children and adolescents because they grow and mature at different rates. Weight status in c

Define vitamins b12 deficiency in vegans, Define Vitamins B 12 Deficiency ...

Define Vitamins B 12 Deficiency in Vegans? Because plants do not synthesize vitamin B 12 , individuals who consume diets completely free of animal products (vegan diets) are a

Limerick, how do we write a limerick spell?

how do we write a limerick spell?

Development of reserves - conservation of wildlife, Development of Reserves...

Development of Reserves - Conservation of Wildlife Establishment of Biological reserves, National parks, Forest reserves, Wildlife refuges and Biosphere reserves are effective

Contractility, Myocardial contractility is mostly dependent on the level of...

Myocardial contractility is mostly dependent on the level of sympathetic nerve activity and is also increased by circulating catecholamines and inotropic drugs like dopamine and do

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