Which of the following is likely a reason why evolutionary radiation would occur on islands? A) there are many more species on islands B) islands tend to have more favourable habitats than continents because they are moderated by the ocean C) islands may have fewer animal and plant groups and thus provide more ecological opportunities D) organisms can disperse easily across oceans E) islands often have more diverse habitats than continents

What makes the finches on the Galapagos Islands a good example of adaptive radiation?         The thirteen different species of finches developed after there was a mass extinction on the Galapagos Islands.         All thirteen species of finches came from the mainland. However, over time, the finches specialized to their area on the island, and their beaks evolved to help them survive predators.          The finches were native to the islands. Over time, more finches from different areas came to the islands and crossbred with the other species on the island, creating more species of finches.         There are thirteen different species of finches on the Galapagos Islands. All thirteen species of finches share a common ancestor from the mainland. The different species of finches filled the vacant niches on the island and specialized.

Examine the image of the relatedness of vertebrates represented in this phylogenetic tree. Which statements are correctly inferred from this tree? Select all that apply.   A) The mammals are the outgroup in this tree.     B) Birds and dinosaurs share a recent common ancestor.     C) Mammals and birds are more closely related than any other species.     D) Turtles are equally as diverged from lizards and snakes as they are from crocodiles.     E) Lizards and snakes are more recently diverged from each other than they are from crocodiles.

Try to outline a scenario explaining the evolution of the three species shown in panel g. Use migration, mutation, genetic drift, selection, reproductive isolation, gene flow, extinction, and many generations in your scenario. Based on your scenario, what are the components that are necessary in a population in order for it to split or diverge into two new daughter species from a single ancestor (the parent species)?

How do we know how old a fossil is? A) We compare it to current species and see how much has changed B) We see how much soil is on top of it C) We use radiometric dating

12) Instead of 1 uniform definition, biologist use over 20 different definitions of "species". Why? A) Because scientists searching for life on other planets do not want to be restricted to the narrow definition that applies to earth based life forms B)  Because historically biologist have argued over the correct definition of this term and therefore have split into seperate "camps" for different definitions C)    Because life includes both sexual and asexually reproducing organisms D) Because life is so diverse that no single definition used so far can be uniformly applied in a meaningful way to all organisms

How can we reconstruct those 3.5 billion years of evolutionary history in order to understand the extraordinary events that have ultimately resulted in the biological diversity we see around us today?

Identify each of the following as an example of MICROEVOLUTION or MACROEVOLUTION.Then，state whether it supports the theory of gradualism or punctured equilibrium.（a） The Cambrian explosion（a period of rapid evolutionary change where many complex organisms evolved）.（b）The evolutionary change of animals and terrestrial plants.（c）beetles with a GREEN sheen are more prevalent than beetles with a BLACK sheen.

The presence of homologous structures in two different groups of organisms suggests that (a) the organisms evolved from a common ancestor (b) convergent evolution has occurred (c) they belong to a polyphyletic group (d) homoplasy has occurred (e) independently acquired characters may evolve when organisms inhabit similar environments

The following applies to Lamarckian thinking. Choose all applicable options. a) Individuals change over time.b) Species are static and do not change over time.c) Variations within species are unimportant.d) Species become better and more complex over time.