Genetics and Plant Breeding pointers 14 ✓

   

•   One gene one enzymes hypothesis by beadle and Tatum.
•   Operon hypothesis was given by Jacob and Monad.
•   Origin of groundnut is — Brazil.
•   Origin of maize is — Southern Mexico.
•   Origin of rice is India or Africa.
•   Origin of sorghum is — Africa.
•   Origin of species was published in 1859 by Charles Darwin.
•   Pairing of chromosomes occurs in zygotene stage.
•   Paleopolyploidy is observed in brassica.
•   PAR range from 400-700.
•   Paramutations are due to? Heterochromatization or Metylation of DNA.
•    Parthenogenisis is development of embryo from egg cell without fertilization.
•   Partial diallel formula- ns/2.
•   Partially homologous chromosomes are called as? Homeologous.
•   PBW343 is a popular wheat variety.
•   PCR – RFLP method is known as CAPS method.
•   PCR used in SNP analysis is nested PCR.
•   PCR was given by kary mullis.
•   Pedigree and backcross need space planting whereas bulk method doesn’t need space planting and can be grown in small area.
•   Pedigree method is designated for transgressive breeding and was given by love.
•   Pedigree, bulk and single seed descent and backcross methods are used for handling segregating generations in self pollinated crops.
•   Preformation theory was proposed by Swammerdam and Bonett.
•   Permanent fixation of Heterosis can be done by? Apomixes, Vegetative reproduction and Balanced lethal system
•   Peroxisome is a Single membrane organelle membrane organelle?
•   Peroxisomes is the site of glycolate metabolism.
•  Phenotype of an individual is affected by both genotype and environment
•  Phenotypic ratio of Di-cross hybrid? 9:3:3:1
•   Phenotypic ratio of Monocross hybrid? 3:1
•   Phenotypically males but are females is the characteristic feature of? Klinfelter’ syndrome
•   Phenyketonouria is a heredity disease.
•   Phospaharamdites are used in chemical synthesis of DNA, RNA and other nucleic acids
•   Phosphamarides are used in synthetic biology for oligonucleotide synthesis
•   Photo system II is absent in? C4 plants.
•   Photosynthesis inhibitor is? DCMU.
•   Photosynthesis is an anabolic process during which plants use energy from sunlight to convert carbon dioxide gas and water into sugar molecules.
•   Photosynthesis is an process? Oxidation-Reduction
•   Physical basis of life by Huxely is? Protoplasm
•   Pineapple is a CAM plant.
•   Plant breeding is considered as current phase of evolution (Simmonds, 1979)
•   Plant DNA fingerprinting can be most effectively used through SSR markers.
•   Plant floral display certain traits so that ensure/attract/encourage pollination.
•   Plant hormones that regulate plant growth, particularly by stimulating cell Elongation? Auxin
•   Plant part used for micro-propagation? Explant
•   Plant show wilting and recover after supply? Permanent wilting
•   Plant tissue culture techniques are performed in? Laminar Air Flow Chamber
•   Plant tissue culture was begun by? G Haberlandt (German botanist) in 1808
•   Plant wilt in mid-day and recover in night? Temporary wilting
•   Plants optimize reproductive success through interaction between these components of reproductive system and ecological factors.
•  Plants produce seeds that germinate before they detach from the parent are? Viviparous plants
•   Plants that have been genetically produced using recombinant DNA techniques is called? Transgenic plants
•   Plants that owe their resistance by avoidance are called as? Water savers
•   Plastids was introduced by? Lederberg
•   Pollen from a flower of one plant falls on the stigmas of other flowers of the same plant? Geitonogamy
•  Pollinated species is grown without selections? Bulk
•   Polygenic characters in the germplasm are measured by different methods such as simple measures of dispersion (Range, SD, SE and coefficient of variation), Meteroglyph analysis and D2 statistics.
•      Polygenic characters show variable magnitude of heritability and environment plays and important role in their development. 
•      One gene one enzyme hypothesis was proposed by beadle and Tatum.