Cladogram Exercise by Hamid Razifard

In this video, I am explaining how to build a cladogram for a simple datamatrix. This video may be used for educational purposes only.

[allensmatchmaker]

I spent too long wondering how A and B we’re closely 😂 Then I finally realized that everybody else DIDNT have legs. Thank you so much for your video! Quick and on the point!

[tl]

This is great. Thanks sir! Cheers from University of Florida.

[dr.hamidrazifard]

Here is my answer to your questions of synapomorphy:
Here, we assume that 0s are all ancestral and 1s are all derived characters, i.e. appearing later in the evolution of this group of taxa. So, C and D share only one character (eyes), which is also shared by all other taxa, thus having eyes is not a synapomorphy for C and D, but it is a synapomorphy for all the taxa.

[nurulnajihah]

Thank you sir..really help me to understand more now.👍

[barabbasrosebud]

Excellent science! No assumption of relationship is made.

[amipatel]

Thanks for your explanation it was very helpful 👍

[flz]

Why is it that only A and B have synapomorphies but not D&C, C&A ?

[GSPatch]

Are synapomorphies identified when all characters are shared except one?

[samnoakes]

C & D have 4 synapomorphies according to the list. Don't they all have synapomorphies (they all have eyes)?

[aishabhat]

Synapomorohy is confusing, not mentioned clearly.🙁