The generation time of a tree species is likely to be 50 to 100 times longer than that of many species of herbivorous insects and parasitic fungi,so a tree’s potential rate of evolution should be slower. Why have trees, or other organisms with long generation times, not become extinct as a result of the potentially more rapid evolution of their natural enemies?

What group of organisms shares the most recent common ancestor with plants?

The production of megaphylls by many different species of plants is an example of _____. a. parallel evolution b. analogy c. divergent evolution d. homology

You are studying two variations of banana slugs. They have similar coloration and live in the same habitat. Although they are physically able to mate, there are no offspring that survive embryologic development. What can you conclude about the banana slugs? * Pre-zygotic barriers have forced them to be separate species. They are in Hardy-Weinberg equilibrium. Microevolution is occurring in both variations. They are two separate species. Two species of toads are reproductively isolated due to the fact that one species mates in early summer and one in late summer. Both species of toads evolved from a common ancestor. What type of speciation occurred?* OAllopatric

с C C Blue Oak (B) Oregon Oak (0) Valley Oak (V) Coast Live Oak (C) Which character(s) in the data matrix are parsimony informative? B B B Tree 1 X X B 1 A T T T T T B B 2 A A 2, 4, and 6 3 Tree 2 তত ত Use the diagrams below to: Draw the three possible unrooted trees for the four taxa in the data matrix. Map each informative character, correctly showing the changes on each tree. Circle the most parsimonious tree Please draw out your response to questions 2-4 using the template below as a guide, take a picture, and list the correct number of steps and then insert the picture below. G с G 4CCG G с G G SATIG 5 6 G 5559 G B B C X X X G C B Tree 3 X

What could the lengths of the branches on the x-axis represent? (choose all that apply, no partial credit) Choice 1 of 4:Time Choice 2 of 4:Size of species Choice 3 of 4:number of genetic change Choice 4 of 4:number of species

Some non-plant organisms like the protist that spreads malaria contain a non-photosynthetic chloroplast called an apicoplast. Crazy! What best explains how protists have evolved apicoplasts? Select one: a. phosphorylation acts as a molecule switch b. the central dogma of biology C. the endosymbiotic theory O d. sympatric speciation O e. chemiosmosis e Dec 8 at 5pm Jump to... → Next page

On this cladogram, the Kingdom Plantae (plants) is outlined in red. What is the "Charophyte green algae" considered to be relative to the plants? Charophyte green algae Mosses Ferns Gymnosperms Angiosperms Also a plant The ingroup The outgroup The basal taxon to the Kingdom Plantae The ancestor to the plants Clear my selection *

A number of different, unrelated species of Arctic fishes have evolved an adaptation to avoid freezing in frigid, winter waters.  These different species all use the same glycoprotein that they circulate through their blood to prevent ice crystals from forming in their bloodstream.  What is the adaptation of freeze resistance in these fishes is an example of? Parsimony Paraphyly Homoplasy Synapomorphy

Using Index Fossils  Problem  How can fossils be used to determine the relative ages of rock layers?  Introduction  It is easy to compare the ages of fossils found in sedimentary rocks at one location. Fossils found in an upper rock layer will be younger than fossils found in a lower layer, unless the layers have been overturned. It is not as easy to compare the ages of fossils found in rocks at different locations. Scientists use index fossils to determine the relative ages of rock layers. Scientists use radiometric dating to find the actual age of rocks and fossils.  In this lab, you will work with drawings of rock layers from different locations. Each layer will contain at least two fossils. Using the fossils as clues, you will organize the layers from oldest to youngest.  Skills Focus  Interpret Visuals, Sequence, Draw Conclusions  Materials  scissors   Safety   Do not direct the points of the scissors toward yourself or others. Use the scissors only as instructed.  Pre-Lab…