Summary of inactivating mutations in cetacean SWS1 and LWS genes.

Inactivating mutations include frameshifts, Schiff's base counterion site mutations, and splice site mutations. All alignments are provided in Text S3. Inactivating mutations are also cross-referenced to branches in Figure 1.失活突变涵盖移码突变、希夫碱（Schiff's base）抗衡离子位点突变及剪接位点突变。所有序列比对结果均已在文本S3（Text S3）中提供，且失活突变已与图1（Figure 1）中的分支完成交叉参照。