10 Questions
What is the approximate age of the earliest animal tracks?
585 million years ago
Which group of organisms was likely the first to colonize terrestrial environments according to the text?
Prokaryotes
What major transition in the history of life is associated with the origin of multicellularity?
Origin of eukaryotic multicellular life
What is the key characteristic used to define monophyletic groups?
They have an ancestor and all of its descendants
Which type of DNA comparison technique involves comparing mutation rates between different species?
Molecular clock
When did the oldest fossils of tetrapods, with limbs coming out of the side of their bodies, date back to?
370 million years ago
Which group emerged around 50 million years ago according to the text?
Primates
What is the primary reason given for mammals being able to survive the extinction event that wiped out dinosaurs?
Their ability to produce milk and give live birth.
Among the following options, which one best describes a phylogeny?
A visual representation of the evolutionary history of populations, genes, or species.
What type of organisms were the earliest animal life forms believed to resemble?
Sponges
Test your knowledge on phylogenetic reconstruction, including concepts such as synapomorphies, clades, outgroup analysis, and the application of Occam's Razor. Learn about why Reptilia is not monophyletic and how phylogenies are inferred based on characters.
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