NATS 1940 Lecture Notes - Lecture 1: Pleurotomaria, Intelligent Designer, Cephalopod

• School: York University
• Department: Natural Science
• Course: NATS 1940
• Professor: Mark Vicari

Document Summary

Evolution of eyes: complex eye has 4 working parts. Id proponents: all 4 parts must be present for the eye to be useful: probability of mutation at a single dna base-pair = 1 in 1 billion = 1/109. If each part could be created by a single mutation (very optimistic), the probability of all. 4 parts arising by spontaneous, simultaneous mutations = 1/1036: = (cid:1004). (cid:1004)(cid:1004)(cid:1004)(cid:1004)(cid:1004)(cid:1004)(cid:1004)(cid:1004)(cid:1004)(cid:1004)(cid:1004)(cid:1004)(cid:1004)(cid:1004)(cid:1004)(cid:1004)(cid:1004)(cid:1004)(cid:1004)(cid:1004)(cid:1004)(cid:1004)(cid:1004)(cid:1004)(cid:1004)(cid:1004)(cid:1004)(cid:1004)(cid:1004)(cid:1004)(cid:1004)(cid:1004)(cid:1004)(cid:1005)%, or (cid:1004) Types of eyes found in modern day molluscs: the limpet patella, this t(cid:455)pe of (cid:862)e(cid:455)e(cid:863) (cid:272)a(cid:374) o(cid:374)l(cid:455) dete(cid:272)t shado(cid:449)s passi(cid:374)g o(cid:448)er it or other (cid:272)ha(cid:374)ges i(cid:374) light intensity; it cannot form an image. This eye is able to discern crude images: the marine snail murex, this eye is covered by a transparent membrane (the cornea) for protection. It also has a cluster of liquid-filled cells beneath the opening that acts as a crude lens.