BILD 3 Lecture Notes - Lecture 1: Genetic Drift
30 May 2016
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How they interact with each other and their environments. Where they came from and how they change. Common ancestor of the dragonfly and macaw couldn"t fly. Besides the fa(cid:272)t that (cid:271)oth are (cid:271)ilateral sy(cid:373)(cid:373)etri(cid:272) a(cid:374)d has a head, they do(cid:374)"t have much in common. Grow independently from the lineage and becomes distinct. Powered flight is the same trait among many organisms, but it evolved independently. Why the dragonfly wings look different than the macaw wings. Squirrels have wings but they don"t flap like dragonfly and macaw wings. Bird wings are an extension of their middle fingers. Bat wings are an extension of all their fingers. Convergent evolution of ecomorphs through competition for habitat. Animals on the ground stay on the ground. Animals on the trunk stay on the trunk. Animals on the leaves say on the leaves. All three species originated from one species and ultimately become ecomorphs.
