Which of the below is the best description of a phylogenetic tree? A hypothesis

Question

Which of the below is the best description of a phylogenetic tree? A hypothesis about evolutionary relationships among different organisms An observation that is made of a group of organisms An experiment that is used to test predictions of a hypothesis None of these describes a phylogenetic tree 100 brown anoles (a type of lizard) on a large raft of trees and other vegetation (dislodged by a hurricane) wash ashore an island with a large population of ground-dwelling curly tailed lizards, but no native anoles. Curly tailed lizards are important predators of brown anoles. Brown anoles with shorter legs are better at climbing up bushes and small trees to avoid the predatory curly-tailed lizards. (Longer legged brown anoles have difficulty climbing twigs to avoid curly-tailed lizards.) Which of the below would be necessary in order for natural selection on leg length to occur? All of these Heritable variation in leg length in the anole population Severe storms that randomly kill off large numbers of anoles Differential survival of anoles that is correlated with tail length

Explanation / Answer

1) Phylogenetic tree represents the hyporhesis about evolutionary relationship among different organisms. The organisms are grouped together based on shared similar traits. Each branching point represents the most recent common ancestor.

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