Exam 1 - Week 2 & 3 Chapter 1 Flashcards Preview

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Flashcards in Exam 1 - Week 2 & 3 Chapter 1 Deck (24):
1

a chain of ancestors and their descendants

lineage

2

cetaceans possess many traits found only in _____

mammals

3

a 40 million year old whale that has different types of teeth, some of which have complicated surfaces that bear a strong resemblance to the teeth of some extinct land mammals.

Dorudon

4

a mechanism that can lead to evolution, whereby differential survival or reproduction of individuals causes some genetic types to replace others

natural selection

5

the independent origin of similar traits in separate lineages

convergent evolution

6

structural characters that are similar due to a shared common ancestry

homology

7

a derived form of a trait that is shared by a group of related species

synapomorphy

8

Ambulocetus

"walking whale"; the first fossil whale with legs that paleontologist

9

a visual representation of the evolutionary history of populations, genes, or species

phylogeny

10

studying limb development in dolphins has revealed some of the mechanisms responsible for the evolutionary

loss of hindlimbs

11

Know the misconceptions about evolution

17 of them - in notes

12

the number of viable offspring you produce (your offspring)

direct fitness/reproductive success

13

the numer of viable offspring produced by those related to you (siblings, cousins, etc)

indirect fitness

14

the number of viable offspring you produce (your offspring) (DIRECT FITNESS) PLUSthe numer of viable offspring produced by those related to you (siblings, cousins, etc) (INDIRECT FITNESS)

Inclusive fitness

15

the number of copies of your genes left in future generations; this is the clearest definition and very hard to measure

fitness

16

species that you can only tell apart molecularly

cryptic species (pocket gophers)

17

darwin raised different pigeon breeds that all came from

wild rock dove

18

the struggle for existence and the triangle of life

*know drawing*
basically you cant spend too much time on the on thing because then you don't have time for the others
avoid death-find food- reproduce

19

vestigial organs

parts that are not used but still there
wings in new zealand kiwi (dont fly)
vestigial muscle in humans (arrector pili muscle makes hair stand up to make you look bigger - defense mechanism)

20

corroborating evidence that whales evolved from terrestrial mammals

paleontological, morphological, molecular, vestigial structures, embryological, paleobiogeographic,

21

a gene that once produced a protein, but because of accumulation of mutations no longer does.

fossil gene

22

why is tuberculosis more deadly than leprosy

tuberculosis (airborn) can live on its own without a host. leprosy can not live without a host . if its not using its metabolic genes then it looses them and fossilizes - which is why leprosy has more fossil genes than tuberculosis

23

what is the concept of "use it or lose it"? examples?

genes will no longer produce proteins if they are not used; humans have a lot of fossilized genes that have to do with smell

24

what is the interplay or connection between descent with modification and natural selection

?