Question

Phylogeny

Activity 1 - Phylogeny of the Roundoids 000000 Allow us to introduce you to the Roundoids a group of species invented for your phylogenetic pleasurel The cartoons above represent a group of species for which you are trying to reconstruct phylogeny. Assume that the open circle (1) is the ancestral condition. Develop a character matrix for the roundoids on your worksheet and then use the matrix to develop a phylogenetic hypothesis (tree) for these taxa (sing, taxon) mapping the evolutionary events described in the character matrix. It will be obvious to you that you can't use the 0 and 1, or "yes and no" system for everything here - think up succinct descriptors for the same trait that has different forms, such as the nose, mouth and some others. Construct your tree on the Worksheet it can be on its side like in your book or vertical, like a tree) and answer the questions on the worksheet 1. You can either print the worksheet, draw the tree, take a picture of it and submit the picture on Blackboard, or use the drawing tools in Microsoft Word to draw the tree on your computer preferred method). 2. To access the drawing tools in Word, Go to the "insert" menu and then click on the arrow to the right of "Shapes". A menu should open allowing you to select the shape you want to draw. For a phylogenetic tree select line and you can then draw lines on the Word document to make your tree. To label the tree with the species and traits, you can select "Text Box, also from the Insert menu, in order to place a box with text anywhere on the tree you like. 3. Make sure you label on the tree where you are hypothesizing each trait arose and possibly changed

Answer 1

I will give it a try.

Character/Species	1	2	3	4	5	6
Shape	Round	Round	Round	Round	Round	Round
Eyes	0	2	2	2	2	2
Nose	0	0	1	2	2	2
Mouth	0	0	0	1	2	2
Ears	0	0	0	1	1	2
Hair	0	0	0	0	1	1
Freckles	0	0	1	0	2	0

No nose (0) , horizontal nose (1), Vertical nose (2)

No mouth (0), Smiling (1), other (2)No ears (0), 1 ear (1), 2 ears (2)

Hair absent (0), hair present (1)

No Freckles (0), less freckles (1), more freckles (2)

This is just a matrix table.