Biology Questions
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Two guys who did the first experiment that provided evidence for the prebiotic soup hypothesis
Which of the following was not a source of molecules in the "prebiotic soup"?
Two guys who were able to make peptide chains from a prebiotic soup experiment
If two sister species (Taxa 2 and 3) on the phylogenetic tree shown differ from the other two species in a single character state (e.g., dark or light fur), how many character state changes (evolutionary events) are needed to explain this pattern?
Which of the following is not a shared property of living things?
What is the difference between cladograms, phylograms, and chronograms?
(T/F) We represent uncertainty about relationships in a phylogenetic tree with a polytomy
(T/F) Fish are not a monophyletic group while tetrapods vertebrates are a monophyletic group
Based on the figure shown, the HIV that infected more than 400 children in a Benghazi hospital:
(T/F) Maximum likelihood methods assume that the best phylogeny is the one that explains observed character data with the fewest evolutionary changes
Which of the following is an advantage of using distance methods to construct trees?
The figure shown is a phylogeny created with DNA sequence data and has high bootstrap support values. The tree also includes observed phenotypes (in varying shades of gray) for the five taxa. The character states are indicated by "B" or "b", "G" or "g", and "P" and "p". Evaluate the hypothetical phylogenetic tree using a parsimony approach. For which of the following taxa were there the fewest state changes if the inferred ancestral state was "bGP"?
Which of the following phylogenetic methods involves counting up the number of commonalities among taxa and using this information to cluster closely related species together?
The study of phylogeny resists on our observation of the characters of organisms, which may include all of the following except:
(T/F) A phylogenetic tree is a hypothesis about evolutionary relationships
In the phylogeny shown, which of the following hypotheses provides the most parsimonious explanation for the distribution of beak ("bill") color among the five species of magpie. The yellow-billed magpie has a yellow beak and the rest have black beaks.
Which of the following is NOT a pre-zygotic isolating mechanism?
The upper forelimbs of humans and bats have fairly similar skeletal structures, whereas the corresponding bones in whales have very different shapes and proportions. However, genetic data suggest that all three kinds of organisms diverged from a common ancestor at about the same time. Which of the following is the most likely explanation for these data?
Evolution is purposeful true or false
Which variable increases the likelihood of allopatric speciation taking place more quickly?