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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.
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Tracheoles - Respiration The tracheal system consists of an air filled system of tubes - the tracheal tubes that branch repeatedly until they become fine as capillaries, and
GOLGI APPARATUS It is a complex cyctoplasmic structure made up of smooth membrane saccules or cisternae, a network of tubules with vessicles and vacuoles, which take part i
Determine the term Epitheliomuscular cell. Cells which line outer surface of cnidarians. These cell have two functions: first is to form the outer body covering of animal, seco
Define Obesity - Excessive Fat Intake? In obesity, cutting down total energy intake or increasing output to ensure energy balance is the basic principle of prevention. Fat bein
Q. How is the extracorporeal digestion associated to predation in arachnids? Arachnids can inoculate poison to kill or paralyze their preys using structures called chelicerae.
Which factors are altered when cells are moved from an in vivo to an in vitro environment, and how do cells respond to these changes?
Systemic embolization occurs in 22 per cent to 50 per cent of cases of IE. Emboli often involve major arterial beds, including lungs, coronary arteries, spleen, bowel, and extremit
formation of grem layers
what is the bioindicator of water pollution.
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