Question

Answer question number three.

3. Now construct a matrix of shared derived features for the phyla data set in Table 4: Remember that this matrix is based on shared derived traits/States so you need to count the total number of times in which the two phyla share the non-ancestral (derived) States in Table 3 (i.e. they are both coded with a 1 or 2). The shaded portion of the table does not need to be filled in. Page 3 of 5 Spring 2020 Table 4. Matrix of shared derived traits/States of animal phyla Porifera Cnidaria Platy. Mollusca Arthro. Echino. Chordata Porifera Cnidaria Platy. Mollusca Arthro. Echino. Chordata 4. Now use Table 4 to construct the shortest tree. If you don't remember how to use the Shared Derived Characters table, look back at your Building Pwogenies packer. Draw out your hypothesized cladogram in the space below (if you want, you can draw it on paper, take a picture, paste/insert the picture in the space below).

This information may be useful. These are the questions before. Not sure if they play a part.

Answer 1

Ans 3: For each pair of taxon you have to check how many characters have both as 1 or both as 2 from table 3. Both the taxon having 0 as common doesn't count since only derived characters are to observed.

410 Porifera Cridesia platy Mollusca Asthany Echino Chordata o oo ooo X 3 3 2 2 Porifera I Cnidaria I Platy. 1. Mollusca I Arthro Echino Chordata