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17 notecards = 5 pages (4 cards per page)

Viewing:

Evolutionary Relationships

front 1

Evolutionary Relationships

back 1

It is based on shared characteristics.

front 2

Which describes the modern classification system?

back 2

based on evolutionary relationships

front 3

Why was modern classification invented?

back 3

Scientists understood that species share a common ancestor.

front 4

Consider the diagram.

Josiah says this is a phylogenetic tree of the dinosaurs. Maleek says it is a cladogram of the dinosaurs. Who is correct?

back 4

Both are correct.

front 5

A scientist is trying to determine how closely related a moth species (Species Z) is to four other moth species (Species A, B, C, and D). He examined the DNA of each species and compared it to the study subject. He then created this table.

Which species is most closely related to the moth species (Species Z)?

Species # of genetic differences

Species A 12

Species B 3

Species C 14

Species D 28

back 5

species B

front 6

Dr. Digger, a paleontologist, finds a fossil that he describes in his journal.

The creature was approximately 1 meter long, with its backbone fused into a large shell covering the body cavity. It had a beaklike mouth, without teeth, and all four limbs were in the form of flippers.

Based on anatomical similarities, to which modern animal is Dr. Digger’s creature most closely related?

back 6

sea turtle

front 7

If two organisms are in the same clade, what can you predict about their relationship?

back 7

They share a common ancestor.

front 8

According to the cladogram, which organisms are in the smallest clade with birds?

back 8

Crocodiles

front 9

Consider the phylogenetic tree of Old World primates.

According to the tree, which primates share the most recent common ancestor with humans?

back 9

bonobos and chimpanzees

front 10

According to the cladogram, which organisms have roundworms as a common ancestor?

.

back 10

mollusks, echinoderms, chordates, and annelids

front 11

Consider the cladogram. Which group of organisms has the derived characteristics of true tissues, bilateral symmetry, and a pseudocoelom?

back 11

Roundworms

front 12

In a cladogram, what occurs at a node?

back 12

A derived trait appears.

front 13

Which best describes derived characteristics?

back 13

They are newly evolved traits.

front 14

A scientist discovers a new organism that is related to clownfish. What can the scientist discover by using molecular clocks?

back 14

the amount of time that the two species have been evolving apart

front 15

Julia is trying to place a duckbilled platypus, lizard, bear, and monkey on a phylogenetic tree. She learns that the duckbilled platypus, bear, and monkey are classified as mammals. She also learns that mammals share a common ancestor with reptiles. Which additional piece of information will be most helpful to Julia to properly build her phylogenetic tree?

back 15

The platypus lays eggs like a reptile.

front 16

Protists are a group of organisms that are characterized as eukaryotes (they have cells with nuclei) that are neither plants nor animals nor fungi. They are very diverse, and there are many hypotheses about their classification. The cladogram for protists is constantly changing and, sometimes, there are opposite hypotheses that both have data to support them. What is the implication of a changing hypothesis?

back 16

It is acceptable because data are still being collected.

front 17

Which of the following are Phylogenetic trees also know as ?

back 17

Cladogram