TY - JOUR T1 - Similarity/ dissimilarity analysis of flowering plant DNA sequences AU - Xiaoshun Xu and Zhongrui Gao JO - Journal of Information and Computing Science VL - 4 SP - 300 EP - 306 PY - 2019 DA - 2019/12 SN - 14 DO - http://doi.org/ UR - https://global-sci.org/intro/article_detail/jics/22406.html KW - AB - 1 Department of Mathematics, Jinan University, Guangzhou, 510632, China   (Received November 06 2019, accepted December 28 2019) The multiple sequence alignment (MSA) is a usual tool in DNA sequence comparison. However, this method meets a hard challenge for a large number of long DNA sequences. To remedy this problem, we propose  a  new  way  for  DNA  sequence  comparison  based  on  a  novel  DNA  map.  The  method  is  that,  by assigning a dinucleotide to a number, we construct a new graphical representation of DNA sequences based on horizontal  lines.  We  further  utilize  the  maximal  eigenvalue  of  a  related  matrix  to  derive  a  mathematical descriptor  for  a  DNA  sequence.  We  also  perform  the  similarity/dissimilarity  analysis  among  the  coding sequences of ribulose bisphosphate carboxylase small chain gene and large chain gene of flowering plants. The results indicate that this method can be reliable in the comparison of the flowering plant DNA sequences.