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Fig. 1 | Zoological Letters

Fig. 1

From: Color vision evolution in egg-laying mammals: insights from visual photoreceptors and daily activities of Australian echidnas

Fig. 1

A gene tree of 27 of the 28 identified opsin sequences is shown. One sequence (Emale01 SWS2) is truncated and is not included. This tree is constructed with the highest log likelihood inferred by using the Maximum Likelihood (ML) method and Hasegawa-Kishino-Yano (HKY) model. The best model (HKY + G + I) with the lowest Bayesian Information Criterion (BIC) score was considered to describe the substitution pattern the best. The percentage of trees (1000 bootstrap replications) is shown next to the branches. The initial tree(s) for the heuristic search were automatically obtained by Neighbor-Join and BioNJ algorithms (five Gamma categories)

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