#Question id: 8696
#Unit 9. Diversity of Life Forms
There is some evidence that reptiles called cynodonts may have had whisker-like hairs around their mouths. If true, then hair is a shared ________.
#Question id: 8697
#Unit 9. Diversity of Life Forms
Use the figure to answer the following question.
Which extinct species should be the best candidate to serve as the outgroup for the clade whose common ancestor occurs at position 2 in the figure?
#Question id: 8698
#Unit 9. Diversity of Life Forms
Use the figure to answer the following question.
If the figure above is an accurate depiction of relatedness, then which of the following should be an accurate statement?
#Question id: 8699
#Unit 9. Diversity of Life Forms
Use the figure to answer the following question.
If the figure is an accurate depiction of relatedness, then which of the following should be an accurate statement?
#Question id: 8700
#Unit 9. Diversity of Life Forms
Use the following figure and description to answer the question.
Humans, chimpanzees, gorillas, and orangutans are members of a clade called the great apes, which shared a common ancestor about 15 million years ago. Gibbons and siamangs comprise a clade called the lesser apes. Tree-branch lengths indicate elapsed time. Assuming chimps and gorillas are humans' closest relatives, removing humans from the great ape clade and placing them in a different clade has the effect of making the phylogenetic tree of the great apes ________.
#Question id: 8701
#Unit 9. Diversity of Life Forms
The question refers to the following table, which compares the percent sequence homology of four different parts (two introns and two exons) of a gene that is found in five different eukaryotic species. Each part is numbered to indicate its distance from the promoter (for example, Intron I is the one closest to the promoter). The data reported for species A were obtained by comparing DNA from one member of species A to another member of species A.
Based on the tabular data, and assuming that time advances vertically, which phylogenetic tree is the most likely depiction of the evolutionary relationships among these five species?