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Article

Assessing substitution variation across sites in grass chloroplast DNA.

Journal of molecular evolution - 1 Jun 2007

Zheng Tian, Ichiba Tomoyuki, Morton Brian R

Abstract excerpt

We assess the similarity of base substitution processes, described by empirically derived 4 x 4 matrices, using chi-square homogeneity tests. Such significance analyses allow us to assess variation in sequence evolution across sites and we apply them to matrices derived from noncoding sites in different contexts in grass chloroplast DNA. We show that there is statistically significant variation in rates and...

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PMID: 17541677
DOI: 10.1007/s00239-006-0076-0

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PubMed metadata and Literature Corpus relationships. Corpus snapshot updated 7 Sept 2026. Manifest publication-graph-cohort-2026-09-07.1.

Source receipt: pubmed, retrieved 7 Sept 2026.

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