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Andrea
Andrea, Graduate Student
Category: Homework
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Experience:  Doctoral Candidate and Adjunct Prof. of Biology
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Hi,
Is Andrea available?
Submitted: 8 years ago.
Category: Homework
Expert:  Andrea replied 8 years ago.
HelloCustomer

I'm available, what can I help you with?

Thanks for requesting me!
Andrea
Customer: replied 8 years ago.

Hi Andrea,

Did you see the problems I posted over the weekend? If not, do you have some time to help me with them please?

 

Thanks

Expert:  Andrea replied 8 years ago.
Lekpeh 2008,

Yes, I did see the problems you posted. I will get those to you soon!

Thanks!
Andrea
Customer: replied 8 years ago.
okay, thanks.
Expert:  Andrea replied 8 years ago.
THIS ANSWER IS LOCKED!

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Customer: replied 8 years ago.

Hi Andrea,

Thanks very much. chapter 26 was missing, however I am reposting it.

 

Thanks again

 

Which of the following taxonomic categories contains all the others listed here? (Concept 26.1)

order
genus
class
family
species
submithintsgive up
Part B Animals that possess homologous structures probably _____. (Concept 26.2)
evolved from the same ancestor
have increased genetic diversity
are not related
are headed for extinction
by chance had similar mutations in the past
submithintsgive up
Part C Systematists have used a wide variety of traits to reconstruct the phylogenies of particular groups of organisms. Which one of the following traits produces the best estimate of the true phylogeny? (Concept 26.2)
gross morphological traits
behavioral traits
molecular traits
biochemical traits
all of the above traits combined
submithintsgive up
Part D By definition a clade is _____. (Concept 26.3)
parsimonious
Monophyletic
paraphyletic
analogous
polyphyletic
submithintsgive up
Part E Fossil evidence indicates that some dinosaurs had feathers. If birds are indeed descended from dinosaurs, feathers are what kind of character? (Concept 26.3)
Shared ancestral character.
Polyphyletic character
Cladistic character
Analogous character
Shared derived character
submithintsgive up
Part F What process actually increases the number of genes in an organism's genome? (Concept 26.4)
Cladistics
Parsimony
Gene duplication
Mutation
All of the above.
submithintsgive up
Part G Why do researchers use rRNA in investigations of relationships between taxa that diverged hundreds of millions of years ago? (Concept 26.4)
rRNA is traditionally the nucleic acid chosen for recent comparisons.
rRNA is never the nucleic acid chosen for comparisons.
rRNA cannot mutate.
rRNA mutates rapidly.
DNA coding for rRNA changes relatively slowly.
submithintsgive up
Part H Molecular clocks are based on the idea that _____. (Concept 26.5)
On average neutral mutations arise at a constant rate.
Mutations occur once every generation.
Advantageous mutations arise at a constant rate.
Directional selection occurs at a constant rate.
Molecules resonate at a certain frequency that can be measured.
submithintsgive up
Part I The domains of life are _____. (Concept 26.6)
Animalia, Plantae, Protista
Archaea, Protista, Eukarya
Bacteria, Protista, Eukarya
Archaea, Bacteria, Eukarya
submithintsgive up
Part J What process has clearly been involved in producing the tree/bush/ring of life? (Concept 26.6)
Horizontal gene transfer
phylogenetics
mitosis
artificial selection
taxonomy
submithintsgive up

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Expert:  Andrea replied 8 years ago.
Customer

No problem, I'll get started on these and will have them to you soon. Thanks for accepting!

Andrea
Expert:  Andrea replied 8 years ago.
OkCustomer

Here ya go!

Thanks!
Andrea

Which of the following taxonomic categories contains all the others listed here? (Concept 26.1)
class




Part B Animals that possess homologous structures probably _____. (Concept 26.2)
evolved from the same ancestor






Part C Systematists have used a wide variety of traits to reconstruct the phylogenies of particular groups of organisms. Which one of the following traits produces the best estimate of the true phylogeny? (Concept 26.2)

molecular traits




Part D By definition a clade is _____. (Concept 26.3)

Monophyletic





Part E Fossil evidence indicates that some dinosaurs had feathers. If birds are indeed descended from dinosaurs, feathers are what kind of character? (Concept 26.3)

Shared derived character


Part F What process actually increases the number of genes in an organism's genome? (Concept 26.4)

Gene duplication




Part G Why do researchers use rRNA in investigations of relationships between taxa that diverged hundreds of millions of years ago? (Concept 26.4)

DNA coding for rRNA changes relatively slowly.


Part H Molecular clocks are based on the idea that _____. (Concept 26.5)
On average neutral mutations arise at a constant rate.






Part I The domains of life are _____. (Concept 26.6)

Archaea, Bacteria, Eukarya


Part J What process has clearly been involved in producing the tree/bush/ring of life? (Concept 26.6)
Horizontal gene transfer





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