Question

13.(6 points) Draw a phylogeny below that includes an apple tree, a redwood, moss, green algae, and a fern. Label on the tree when each of the following traits evolved: seeds(A) flower petals(B), roots(C), cuticle(D), dominant sporophyte stage(E). Circle the taxon you would consider a good potential outgroup. 14. (3 points) Temporal and behavioral isolation are examples of premating isolating mechanisms. Mechanical isolation, gametic isolation, and hybrid inviability are examples of postmating isolating mechanisms. Premating isolating mechanisms are considered much more advantageous in keeping closely related species genetically separate than are postmating isolating mechanisms. Do you agree? Why or why not?

Answer 1

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Fern Recl laloodl ple on2 Yes pre mating Mechonism s muen more important ỵn Species odt Mati Mechanism .Because re mati organgmi are matton isolati