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

Growing leaves in the classroom, Growing leaves in the classroom A swee...

Growing leaves in the classroom A sweet potato will make dense foliage in the classroom if it is placed in water. Set the potato, root end down, in a glass or jar and keep the

What is resective therapy, Resective therapy Is used to reduce pockets,...

Resective therapy Is used to reduce pockets, correct negative osseous architecture and rough implant surfaces and increase the area of keratinized gingival if needed. Apical

Metabolic events, Metabolic Events Let us now examine the changes that...

Metabolic Events Let us now examine the changes that occur in the seeds after they imbibe water. In general, the most important metabolic events are: Degradation

How to follow a cell through the cell cycle, Follow a cell through the cell...

Follow a cell through the cell cycle. How many copies of each gene are present at each stage?

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

The emergency department due to the babys persistent, A mother has brought ...

A mother has brought her 2-week-old infant to the emergency department due to the baby's persistent and increasing jaundice. Blood testing reveals that the infant's unconjugated bi

Indicator organism, a) What are the needsfor an organism to be an indicator...

a) What are the needsfor an organism to be an indicator organism? b)  In Australia, National Parks and coastal beaches attract various visitors during holiday periods.  EPA is

Explain about microbial polysaccharides, Microbial polysaccharides Many...

Microbial polysaccharides Many microorganisms produce polysaccharides that either remain attached to the cell wall (capsular polysaccharides) or are  secreted into the extracel

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