Given the phylogeny below, which of the following is an accurate description of the relationships between the species? A В

In the figure, the letters A-G represent individual species that all descended from a common ancestor. DEFG Which of the following conclusions regarding the phylogeny of these organisms can be made from this tree? B is more closely related to G than it is to A. A is more closely related to D than it is to C. G is more closely related to A than it is to F. D is more closely related to E than it is to C.

In the following cladogram species A, B, C, and the root of the tree together represent what sort of group?

Species 1 is described as 2n = 8 and has chromosome composition BBDDEEHH. Species 2 is described as 2n = 10 and has chromosome composition NNPPSSXXZZ. Select the best answer to classify the organism below based on its chromosome composition. Note that each letter represents a chromosome and that the organism below is either an individual from one of the species above or is derived from one or both species above. Organism: BBDEEHH Select one: Oa. Haploid O b. Diploid C. Double Trisomic O d. Autotriploid e. Double Monosomic f. Monosomic O g. Allotriploid Oh. Autotetraploid Oi. Allotetraploid Nullisomic Ok. Trisomic

Redraw and rearrange the branches of the tree below to make the most parsimonious(simplest) tree. A minus (“-“) next to a character indicates that that particular character isnot present in the taxa connected to that branch.

A 2015 article in Nature has summarized the early history of jawed vertebrates using highlights from recent discoveries and how they have changed our understanding of vertebrate evolution. https://www.sciencedaily.com/releases/2014/04/140416133336.htm Question: Given these recent discoveries, how should the cladogram below change? Describe it. It will likely be helpful to reference a synapomorphy noted on the cladogram.

What is a classification system? Give its broad definition as well as some historical background about it.

Complete the chart below to indicate which occurrences would provide barriers sufficient for possible speciation of the organism. Change in ecosystem Effect on reproduction A mountain river is dammed to produce hydroelectric energy. This separates a population of bull trout. 1 A remote hiking trail with limited foot traffic is home to many elk. The trail is expanded to allow for hikers to cross a stream by building a bridge. 2 One sample of frog lays its eggs in shallow water at a pond's edge. Another frog sample in the same area digs a hole near the pond to lay its eggs. 3 One sample of swallow (a bird) uses grasses and mud to build a nest, and another sample uses twigs. 4 1.2.3.4 can be geographical barrier is preventing interbreeding, biological barrier is preventing interbreeding, or nothing is preventing interbreeding

Look at the diagram in the second picture and answer the questions in the first picture, answer all 3 questions  and don't copy anyone else's work, it's a practice assignment so I need to know the answers so I can make sure I pass

Draw the cladogram for "organisms" A-J of the family "Boltidae". Include each of these letters and show where each "character" arose.   asap