VCE · Biology · Natural Selection & Evolutionlive from the app
Hominin Evolution
Human evolution isn't a ladder — it's a bush with many branches, most of them extinct. The trends to know are bipedalism first, bigger brains later, and tool use later still.
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biology · natural selection & evolution · hominin evolutiondrag it · it is yours
the one idea
why this one carries the topic.
Some variants leave more offspring than others. That one sentence explains fossils, DNA similarity, antibiotic resistance, and why there are so many species.
Hominin evolution shows multiple species coexisting, with bipedalism evolving around 4 million years ago, followed by brain expansion and sophisticated tool use in later species.
what examiners catch — Students incorrectly present linear progression from ape to human; examiners expect recognition of multiple coexisting species and the order of trait evolution.
what you leave with
five things, not forty.
Hominins are the group including humans and our extinct bipedal relatives
Bipedalism evolved long before large brain size
Cranial capacity increased across the Homo lineage over time
Homo sapiens emerged in Africa and spread globally
Mitochondrial DNA evidence supports a recent African origin
what's underneath
nothing here is a standalone fact.
knowhere maps every concept to what it rests on and what rests on it — 2 underneath this one, 0 built on top. Each one says why, in a sentence, not as an arrow on a diagram.
this concepthominin evolutionHominin evolution shows multiple species coexisting, with bipedalism evolving around 4 million years ago, followed by brain expansion and sophisticated tool use in later species.
sits under itmolecular clocks and phylogenetic treesbecause the hominin story is dated by clocks
sits under itspeciation and reproductive isolationbecause hominins are a speciation case study
the rest of natural selection & evolution
7 more, same treatment.
Each one is its own knowscape in the app — built for how a particular student takes things in, not one explanation handed to everybody.
speciation and reproductive isolationin the apphow gene pools changein the appmechanisms of natural selectionin the appvariation and mutationin the appdetermining relatedness from sequencesin the appevidence for evolutionin the appmolecular clocks and phylogenetic treesin the app
this is one of 865
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