bag seeds

I was given about 20 seeds from a friend last night witch were given to him by his dad. now i know for a fact his dad grows good strains and these seeds were given to me as a thank you gift. im just wondering if theres any way to tell indica seeds from sativa or ruderalis seeds. 8 are very small dark brown seeds with very dark stripes. another 8 are big fat near black seeds with orangey stripes and 4 are a creamy white with light grey stripes. whats the deal with these white seeds?? I never seen anything like them. are they off? all seeds are hard to squeeze and look healthy. im looking forward to germinating but only have a small grow space. any help would be appreciated :thumbsup: