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life cycle model organism morphology medical importance rapd infertility and its cause gamete intra-fallopian transfer(gift) intra-cytoplasmic sperm injection artificial insemination in-vitro fertilization assisted reproduction technology techniques of art zygote intra-fallopian transfer(zift) transposons transposition significance p-elements in drosophila ac and ds elements banana genetic diversity bioinformatic approach adverse effect c.elegans genome biology polytene chromosome developmental process drosophila genome biology of e.coli pathogenic e.coli karyotypic differences between human and chimpanze karyotype gene gun calcium phosphate precipitation method particle gun bombardment lipofection electroporation physical and chemical methods of dna transfer- mic hybridoma technology synteny testing mapping of genes by somatic cell hybridization heterokaryon cell cell hybridization mechanism of dna packaging chromatosome higher order of chromatin structure h1 proteins histone modification nucleosome model folded fibre model scaffold proteins histones non-histone chromosomal protein chemical composition of eukaryotic chromosomes eukaryotic chromosomes facts about dna thermoregulation extreme cold : resistance and death control of body temperature extreme heat : resistance and lethal death vant hoff equation zebra fish as model organism zebra fish genome embryonic development discovery of transposons transposible elements in eukaryotes karyotypic differentiation in drosophila