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Phylogeny and Classification Changes Quiz

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Phylogeny and Classification Changes Quiz

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Questions and Answers

What is the main reason for the creation of the three domains (bacteria, eukarya, archaea) classification system?

To better understand the relationships among different species (correct)

To organize organisms according to their habitat preferences

To differentiate between animals and plants

To classify organisms based on their method of reproduction

Which of the following structures are considered homologous?

Vertebrae in humans, cats, whales, and bats (correct)

Root systems of a tree and a moss plant

Eyes of a human and the eyes of a fly

Wings of a bird and wings of a butterfly

What is the main difference between homologous and analogous structures?

They have different evolutionary origins (correct)

They serve different functions in different organisms

They are not inherited from a common ancestor

They are always visible on the surface of the organism

How can traits be used in studying organisms?

To understand inheritance patterns Signup and view all the answers

Which of the following is classified as a character?

Fur color in mammals Signup and view all the answers

In what aspect do homologous and analogous structures differ?

Their shared evolutionary history Signup and view all the answers

Why are monophyletic clades preferred over paraphyletic and polyphyletic groupings?

They accurately represent evolutionary groups Signup and view all the answers

What distinguishes a paraphyletic group from a monophyletic clade?

Includes an ancestral species and some, but not all, descendants Signup and view all the answers

Which of the following is a shared derived character?

Character unique to a particular clade Signup and view all the answers

What is the main purpose of using maximum parsimony in determining evolutionary relationships?

Minimize the number of evolutionary changes Signup and view all the answers

Why is it challenging to estimate evolutionary time accurately using molecular clocks?

Different genes may evolve at different rates Signup and view all the answers

With reference to protists, why is the group no longer considered to exist?

Protists present variations that eliminate a single common ancestor Signup and view all the answers