Zoology ppw 2

transmutation idea

Most people thought species fixed and unchangeable, the result of some divine order (incl. Linnaeus)

3 parts of understanding evolution (FCM)

fact: organisms change over time

course: in what ways have organisms changed

mechanism: why do they change

jean baptiste de lamarck argued 3 things (SOE)

species change over time, organisms started simple then became more perfect, evolution by inheritance of acquired characteristics (giraffe guy)

force names lamark came up with

what was wrong with lamarckian thinking

confused physiology with genetics

wallace vs darwin

voyaged on HMW beagle and came up with natural selection vs. he went around the world to collect animals/greatly admired darwin

evolution by 3 basic parts (IDT)

inheritable variation over time, differential survival and reproduction, time in generations

Darwin believed in pangenesis which means

every part of the body contributes to gametes

gregor mendel demonstrated particulate inheritance which means

transmission of alleles or genes in discrete units

first vetebrate fossil is from the

cambrian period (518 mya)

to be a vertabrate you have to be a

chordate

chordate anatomy (NDPEP)

notochord, dorsal hollow nerve chord, postnatal tail, endostyle, pharyngeal arches

vertebrate anatomy has everything chordates have including (SCMVIG)

sense organs, cranium with brain, multichambered heart, vertebral column, inner ear, gut