Problem: Use these critters to answer the following questions.a) Construct a taxon by character matrix for the above organisms(i) presence/absence of hair(ii) presence/absence of stripes (iii) presence/absence of spots(iv) presence/absence of eye(v) presence/absence of fins(vi) presence/absence of tail(vii) presence/absence of jawiiiiiiivvviviiOABCDEFPresence +          Absence -b) Draw the most parsimonious cladogram for the below taxa, mapping out all 7 characters onto the tree. Then chose a node, circle it, and rotate it along that node by drawing a second tree that shows identical phylogenetic relationships.

FREE Expert Solution

For a) The character matrix should look like this:


i (hair)

ii (stripes)

iii (spots)

iv (eye)

v (fins)

vi (tail)

vii (jaw)

O

A

+

+

+

+

B

+

+

+

+

C

+

+

+

D

+

+

+

+

+

E

+

+

+

+

F

+


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Problem Details

Use these critters to answer the following questions.

a) Construct a taxon by character matrix for the above organisms

(i) presence/absence of hair

(ii) presence/absence of stripes 

(iii) presence/absence of spots

(iv) presence/absence of eye

(v) presence/absence of fins

(vi) presence/absence of tail

(vii) presence/absence of jaw


i

ii

iii

iv

v

vi

vii

O








A








B








C








D








E








F








Presence +          Absence -


b) Draw the most parsimonious cladogram for the below taxa, mapping out all 7 characters onto the tree. Then chose a node, circle it, and rotate it along that node by drawing a second tree that shows identical phylogenetic relationships.

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What scientific concept do you need to know in order to solve this problem?

Our tutors have indicated that to solve this problem you will need to apply the Phylogeny concept. You can view video lessons to learn Phylogeny. Or if you need more Phylogeny practice, you can also practice Phylogeny practice problems.