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THE BASIS OF ORGANIC INHERITANCE i Chromosomes and Genes i
The Chromosomes in Somatic Division the Reduction Division and Fertilization
The Nature of the Gene and the Genetic Code
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abnormal gene affected males affected persons albino alleles amongst anonychia antigen appear autosomal average bearing the normal blood group carrier cent chance chapter child chromo chromosome bearing Chromosome diagram showing chromosome pair colour blind condition congenital course cousins crossover daughters defects disease dominant gene enzyme example factors family group family history female FERTILIZATION gametes gene frequencies genetic constitution haemoglobin haemophilia haemophilic happen hereditary heterozygotes heterozygous heterozygous women homozygote homozygous illustrated in Fig important individual inheritance instances karyotype kind linkage loci majority marriages married mating mongols mother multifactorial nail-patella nail-patella syndrome normal gene normal male observed occur offspring ovum parents Pedigree illustrating population possible probably rare ratio recessive gene red cells REDUCTION DIVISION relatives result Rhesus risk sex chromosomes sex linked genes shown in Fig sibs sibships sickle cell anaemia single gene sometimes spermatozoon syndrome thalassaemia trait translocation usually woman X chromosome zygous