Question

Write a short note on role of cytology in taxonomy

Answer 1

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⏩Cytology has made an important contribution to taxonomy during last few decades. ..

♒Cytotaxonomy is the branch of biology dealing with the relationships ... Improvement in the cytological techniques permit chromosomal studies .

♒Chromosome numbers are mainly determined at mitosis and quoted as the diploid number (2n). Another important taxonomic character is the position of the centromere.

♒Meiotic behaviour sometimes shows the heterozygosity of inversions. Cytological data is significant than other taxonomic evidence.


♒.The Study of primate chromosome is another very active field,which provide very much information on relationships(chiarelli,1996). The number, structure, and behaviour of chromosomes is of great value intaxonomy, with chromosome numberbeing the most widely used and quoted character.

♒Chromosome numbers are usually determined at mitosis and quoted as the diploid number (2n), unless dealing with a polyploid series in which case the base number or number of chromosomes in the genome of the original haploid is quoted.


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Answer 2

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Improvement in the cytological techniques permit chromosomal studies.The Study of primate chromosome is another very active field,which provide very much information on relationships(chiarelli,1996). The number, structure, and behaviour of chromosomes is of great value in taxonomy, with chromosome number being the most widely used and quoted character. Chromosome numbers are usually determined at mitosis and quoted as the diploid number (2n), unless dealing with a polyploid series in which case the base number or number of chromosomes in the genome of the original haploid is quoted. Another useful taxonomic character is the position of the centromere. Meiotic behaviour may show the heterozygosity of inversions. This may be constant for a taxon, offering further taxonomic evidence. Cytological data is regarded as having more significance than other taxonomic evidence.

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