S-gene, Biology

Assignment Help:

S-Gene

The S-gene has been suggested to be a super gene complex with several linked genes. It is supposed to have at least six (may he more) closely-linked genes which determine length of style (gene G), surface of stigma (S), pollen incompatibility (I'), stylar incompatibility (I"), pollen size, and/or shape (P), and stamen height (A). Being closely linked they are inherited together but because of crossing over, can be separated. In addition heteromorphic incompatibility can be further characterized by-

  • Saprophytically -determined incompatibility reaction,
  • Inhibited growth of incompatible pollen tube in the style, and
  • Expression of dominance between alleles of the incompatibility genes in both, pollen and style.

Related Discussions:- S-gene

Variety of locomotion, Variety of Locomotion A number of animals are s...

Variety of Locomotion A number of animals are sendentary, remaining attached to some substratum. These animals may move parts of their body but this does not result in the mov

Malpighian tubules, Malpighian Tubules Other arthropods like insects ...

Malpighian Tubules Other arthropods like insects and myriapods and arachnids have Malpighian tubules, the outgrowths of alimentary canal like excretory organs. Malpighian tub

Dna replication at biochemical level, Although there is much talk in the ne...

Although there is much talk in the news about stem cell research, the public and policymakers need to understand how basic body cells work to transmit information and replicate to

Respiration, abnormal lung volumes and capacities

abnormal lung volumes and capacities

Difference between myosin and actin filaments, DIFFERENCE S BETWEEN MYOSIN...

DIFFERENCE S BETWEEN MYOSIN AND ACTIN FILAMENTS     Myosin filaments (primary filaments)   Actinfilament s (secondary filaments)

Explain about the freeze drying Method, Explain about the freeze drying Met...

Explain about the freeze drying Method? The Techniques of freeze-drying have been developed over the past half-century for the purpose of preserving certain biological material

Mucopolysaccharides, MUCOPO L YSACCHARIDES They are heteropolysacc...

MUCOPO L YSACCHARIDES They are heteropolysaccharides of high molecular weight that are gelatinous is consistency, functioning in lubrication and as sticky substances in or

Aspergillosis, Aspergillosis Aspergillosis is the most common chronic,...

Aspergillosis Aspergillosis is the most common chronic, granulomatous, necrotizing and cavitary disease of lungs, and is characterized by formation of white yellowish caseous

What is phagocytosis and phagosomes?, Protozoans ingest food by phagocytosi...

Protozoans ingest food by phagocytosis, and consequently, the ingested food is surrounded by a plasma membrane creating a food vacuole, or phagosome. Digestion does not start until

Myofilaments of myofibrils, Normal 0 false false false ...

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

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