Chromosomal Theory Of Inheritance: After the discovery of microscope cytological studies were started and meiosis and mitosis were studied. Von Winiwarter (1901) reported that chromosomes are present in pairs in the ovary of half-day old rabbit. Montgomery (1901) studied meiosis in 42 species of insects. He reported that each association of chromosomes in pairs at Zygotene stage consists of one maternal chromosome and one paternal chromosome. This was based on the facts that one chromosome was small and the other long. Withelm Roux suggested that the chromosomes look like string of beads and present in nuclei of the cells. The … Continue reading Chromosomal Theory Of Inheritance