Nearly all of these proteins can be explained by a single gene family, so this means that the diversity of silk types we see today is encoded by one gene family, so presumably the original spider ancestor made one kind of silk, and over the last 380 million years, that one silk gene has duplicated and then diverged, specialized, over and over and over again, to get the large variety of flavors of spider silks that we have today.
Gotovo svi ti proteini mogu se objasniti jednom genskom linijom, što znači da raznolikost vrsta svile koju smo vidjeli dekodira jedna grupa gena, pa je vjerojatno paukov predak stvarao samo jednu vrstu svile, i tijekom posljednjih 380 milijuna godina, taj jedan gen se umnožio razdijelio, specijalizirao, opet i opet iznova, ne bi li se naposlijetku dobila ogromna raznolikost nijansi paukove svile koje poznajemo danas.