Course

Introductory Biology

Study Pack

Set 21 Taxonomy And Systematics

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Question 1

(Multiple Choice)

Free
Use the principle of parsimony and molecular genetic data to choose a phylogenetic tree for your hypothesis of how the extant species were derived from the ancestor. Use the principle of parsimony and molecular genetic data to choose a phylogenetic tree for your hypothesis of how the extant species were derived from the ancestor.     A)Tree 1 requires the most mutations,making it the best choice. B)Tree 1 requires the fewest mutations,making it the best choice. C)Tree 2 requires the most mutations,making it the best choice. D)Tree 2 requires the fewest mutations,making it the best choice. E)Both trees are equally good because sequences A,B,C,and D are the same in both.
Use the principle of parsimony and molecular genetic data to choose a phylogenetic tree for your hypothesis of how the extant species were derived from the ancestor.     A)Tree 1 requires the most mutations,making it the best choice. B)Tree 1 requires the fewest mutations,making it the best choice. C)Tree 2 requires the most mutations,making it the best choice. D)Tree 2 requires the fewest mutations,making it the best choice. E)Both trees are equally good because sequences A,B,C,and D are the same in both.

A)Tree 1 requires the most mutations,making it the best choice.
B)Tree 1 requires the fewest mutations,making it the best choice.
C)Tree 2 requires the most mutations,making it the best choice.
D)Tree 2 requires the fewest mutations,making it the best choice.
E)Both trees are equally good because sequences A,B,C,and D are the same in both.

Answer

Question 2

(Multiple Choice)

Free
In the cladogram shown,the animals across the top are a lancelet,lamprey,salmon,lizard,and rabbit (from left to right).If the salmon,lizard,and rabbit are an ingroup,which animals would be an outgroup and which characteristics are necessary to be in the ingroup? In the cladogram shown,the animals across the top are a lancelet,lamprey,salmon,lizard,and rabbit (from left to right).If the salmon,lizard,and rabbit are an ingroup,which animals would be an outgroup and which characteristics are necessary to be in the ingroup?   A)Lamprey and lancelet;notochord and vertebrae. B)Lamprey only;vertebrae,hinged jaw,tetrapod,and mammary glands. C)Lancelet and lamprey;hinged jaw,tetrapod,and mammary glands. D)Lancelet,lamprey and salmon;hinged jaw,tetrapod,and mammary glands. E)Lizard and rabbit;tetrapod and mammary glands.

A)Lamprey and lancelet;notochord and vertebrae.
B)Lamprey only;vertebrae,hinged jaw,tetrapod,and mammary glands.
C)Lancelet and lamprey;hinged jaw,tetrapod,and mammary glands.
D)Lancelet,lamprey and salmon;hinged jaw,tetrapod,and mammary glands.
E)Lizard and rabbit;tetrapod and mammary glands.

Answer

Question 3

(Multiple Choice)

Free
When a species consisting of a single large population slowly evolves over many generations into a new species,this an example of

A)a shared derived character.
B)cladogenesis.
C)anagenesis.
D)monospeciation.
E)horizonal gene transfer.

Answer