You can tell it's not a dominant trait because it would show in all the grandchildren.
Recessive
#12 is heterozygous
Youngest to oldest would be: 3, 4, 1, 5, 2. Since it's from the bottom, the ones furthest from the bottom would be the youngest at the top. The oldest fossils would be closest to the bottom.
Answer:
I think a fish
Explanation:
I'm pretty sure the earthworm would get buried or it's bones would just disentergrate. i cannot spell.
i think it is the 2nd one