Journal Entry 3
Classifying Your Hypothesis TWO
This is a short, but important journal entry. The goal here is to place your
hypothesis TWO into one of three groups. For simplicity these are outlined below. For
the journal entry, identify which group your hypothesis TWO belongs to, and then explain
why this is so.
Group 1: A single ancestor. This gives a “tree”
shaped hypothesis. The one on the right
is an example, but they vary a lot.
Group 2: Two or more ancestors with some
speciation (splitting of groups into more
than one species) This gives a row of
bushes – a “hedge” shaped phylogeny.
These vary a lot, from a low number of
groups to a high number of different
bushes. The one on the right is an
example, but they vary a lot.
Group 3: No speciation at all – every species
starts independently. This gives a
whole bunch of straight lines – a blades
of grass or “lawn” shaped phylogeny.