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The Fundamental Principles of Genetics
Particulate Theories of Heredity
HE The Mechanism of Heredity
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allelomorphs appear autosomes back-crossed Bidder's organ bivalents Blakeslee carried chro chromo chromosome groups chromosome number color comb conjugate cross crossing-over cytological Datura daughters Diagram dioecious diploid dominant double Drosophila melanogaster effect embryo eyeless factors fertilized flies flowers gametophyte germ-cells give gonads half haploid haploid number haplonts heredity hermaphroditic hybrid individual interpretation intersexes Jour kinds linkage groups male and female mated maturation division Mendel's Mendelian mosomes moth mother cells mutant mutant characters mutant types nucleus number of chromosomes occur Oenothera offspring organ ovary pair of chromosomes parent parthenogenetic plants polar bodies pole pollen grains polyploid present produced protonema race ratio recessive genes relation set of chromosomes sex-determination sex-linked shown single chromosomes species sperm sperm-cells sporophyte stage studied Tabacum takes place tall teosinte testis tetraploid theory tion triploid trisomic white eyes white-eyed wild type wings Witschi X-chromosomes yellow