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dihybridcross gymnosperms vertebrates tmv bacteriophage mycoplasma lichens mycorrhizae overpopulation causes of overpopulation birth control measures vascetomy tubectomy stds mtp amniocentosis rhodophyceae chlorophyceae agar agar phycoerythrin phycocyanin brown algae polysiphonia carpospores aplanospores zoospores riccia gastrulation fertilization embryo development foetal membranes ascomycetes basidiomycetes basidium apothecium deuteromycetes oogenesis folliculogenesis menstrual cycle ovulation corpus luteum double fertilization triple fusion embryo sac synergids microsporogenesis megasporogenesis pollination kingdom plantae kingdom animalia bryophytes petridophytes angiosperms monohybridcross phenotypic ratio genotypic ratio significance of mendels work mendel's law of inheritance law of dominance law of segregation law of independent assortment co-dominance incompletedominance linkage multiple alleles sex determination in organisms chromosomal theory of inheritance phenylketonuria sickle cell anemia haemophilia clotting mechanism numerical abberations mutations gene mutation point mutation kleinfelter syndrome downs syndrome turners syndrome pedigree analysis marchantia archegoniophore antheridiophore sporogonium gemmae cups gemmae funaria operculum sporophyll sori heterosporous lycopodium strobili microsporophyll malecone femalecone coralloidroots megasporophyll pinus cycas mendel allele locus homozygous heterozygous monohbyridcross