The results showed that the genes and amino acids of goat fsh - a and p subunits all have very high homology with other mammals and their homology all exceed 80 % . these results proved that fsh - a subunit has high conservation among mammals and fsh - p subunit is also quite conservative among mammals although it shows species specificity . goat fsh - a and p subunit genes were reamplified respectively by the new primers which had the corresponding restriction enzymes 结果显示山羊fsh - 、亚基基因及其各自对应的氨基酸与其他哺乳动物的同源性都非常高，一般均在80以上，验证了在同一种内，甚至在所有的哺乳动物中fsh -亚基是极为保守的；而fsh -亚基尽管具有种属特异性，但也是相当保守的。
