The extent of nucleotide differences (divergences) per synonymous site values of seven gametologs in eutherians and marsupials.

*1: In humans, the following genes possess multiple copies (number of copies); HSFX (2), HSFY (2), RBMY (7), XKRY (8), and RPS4Y (2). For genes with multiple copies, the average value was taken over all X-Y pairs.*2: Differences were calculated using a modified version of the Nei-Gojobori method. Values in parentheses were KS estimated with corrections by the Jukes-Cantor Method. The standard error (values after “±”) was calculated from the maximum variance [53] and by [54].*3: Previous stratum was defined by previous studies [7], [18].*4: For other sequences, nucleotide differences and divergences in marsupial UBE1X/Y and UBE1X/Yb are calculated from a comparison of opossum X with kangaroo Y. However, those in marsupial UBE1X/Ya could not be calculated because the corresponding nucleotide sequence of kangaroo is not available. Values for RSMBX/Y, SOX3/SRY, and HSFX/Y are gametologs in wallaby, those in dunnart, and opossum X and kangaroo Y, respectively.1: 人类体内下述基因存在多拷贝（拷贝数）：HSFX（2份）、HSFY（2份）、RBMY（7份）、XKRY（8份）及RPS4Y（2份）。对于存在多拷贝的基因，其取值为所有X-Y配对的平均值。 2: 序列差异经修正版Nei-Gojobori方法计算得到。括号内的KS值为经Jukes-Cantor方法校正后的估计值。标准误（‘±’后数值）通过最大方差法[53]及文献[54]的方法计算得出。 3: 既往演化层的划分依据文献[7]与[18]。 4: 针对其余序列，有袋类UBE1X/Y及UBE1X/Yb的核苷酸差异与序列分歧度，通过比对负鼠X序列与袋鼠Y序列计算得到。但有袋类UBE1X/Ya的相关指标无法计算，因未获取袋鼠的对应核苷酸序列。其中RSMBX/Y、SOX3/SRY及HSFX/Y的对应数据分别取自沙袋鼠中的配子同源基因（gametologs）、袋鼩的相关序列，以及负鼠X与袋鼠Y的序列。