100% satisfaction guarantee Immediately available after payment Both online and in PDF No strings attached
logo-home
Previously searched by you
Previously searched by you
logo
BIOL 180 Exam 3 TEST QUIZ GRADED A+ Q & A MOD007 2023 ATESTED $8.19
Add to cart
Quickly navigate to
Preview
  2.  
  3. BIOL 180
  4.  
  5. BIOL 180

Exam (elaborations)

BIOL 180 Exam 3 TEST QUIZ GRADED A+ Q & A MOD007 2023 ATESTED
 0 purchase
  • Course
  • BIOL 180
  • Institution
  • BIOL 180

What is a synapomorphy? correct answers A trait that is similar in two or more species because it is derived from a trait that existed in a common ancestor. Why do synapomorphies arise during evolution? correct answers When a new species begins evolving independently, novel traits arise which ar...

[Show more]

Preview 2 out of 5  pages

Document information

  • May 21, 2023
  • 5
  • 2022/2023
  • Exam (elaborations)
  • Questions & answers

Subjects

  • biol 180
  • 2023 atested
  • biol 180 exam 3 test quiz graded a q amp a mod007 2023 atested
  • graded a
  • what is a synapomorphy
  • what is a monophyletic group
  • homology and homoplasy produce similar traits w

Written for

  • BIOL 180
  • BIOL 180

Seller

avatar-seller
MastersSetQuizes

Reviews received

Content preview

BIOL 180 Exam 3 TEST QUIZ GRADED A+ Q &
A MOD007 2023 ATESTED
What is a synapomorphy? correct answers A trait that is similar in two or more species because it is
derived from a trait that existed in a common ancestor.

Why do synapomorphies arise during evolution? correct answers When a new species begins evolving
independently, novel traits arise which are then passed on to its descendant species.

What does it mean to say that one phylogenetic tree is more parsimonious than another? correct
answers Fewer changes have to occur to make the origin of traits fit on the tree.

Is it correct to claim that traits always become more complex or specialized over time? correct answers
No, because it is common to observe that they don't.

What is a monophyletic group? correct answers a common ancestor and all of its descendants

What is an outgroup? correct answers a taxon that is closely related to a monophyletic group, but not
part of it

Homology and homoplasy produce similar traits. What is the key difference? correct answers whether
or not the similar traits were inherited from a common ancestor

What is a synapomorphy? correct answers a trait that is derived from an ancestor and identifies a
monophyletic group

As a principle in logic, what does parsimony mean? correct answers the simplest explanation is
preferred (more complicated explanations are less likely)

Why does convergent evolution occur? correct answers When natural selection favors similar traits in
similar environments.

On a phylogenetic tree, what does a branch represent? correct answers a population through time

On most phylogenetic trees, what does the length of a branch represent? correct answers nothing

On a phylogenetic tree, what does a node represent? correct answers a splitting event (one population
becomes two or more evolutionarily independent populations)

On a phylogenetic tree, what does a tip represent? correct answers any taxon (named group)

What criterion does the biological species concept use to identify species? correct answers reproductive
isolation

Which of the following is a strength of the biological species concept? correct answers It is focused on
genetic isolation—the key to speciation,

, Which of the following is a weakness of the biological species concept? correct answers It isn't
applicable to asexual, fossil, or geographically isolated species

Why is the morphological species concept a logical criterion for identifying species? correct answers If
species are evolving independently, they should have recognizable morphological differences

Which of the following is a strength of the morphospecies concept? correct answers It can be used with
fossil or asexually reproducing species, as well as sexually reproducing species.

Which of the following is a weakness of the morphospecies concept? correct answers Experts can
disagree about whether populations are similar enough to be the same species.

Why is genetic isolation--meaning, a lack of gene flow--required for speciation to occur? correct answers
Otherwise, gene flow will prevent populations from diverging (keep them alike).

What is a phylogenetic species? correct answers The smallest monophyletic group on a tree of
populations.

What is vicariance? correct answers A physical event that splits a population into two geographically
isolated groups.

In what sense is "disruptive selection" acting on apple maggot flies? correct answers Selection is
favoring individuals that prefer either apples or hawthorns--not both, or an intermediate.

Which of the following is NOT a key aspect of an adaptive radiation? correct answers It unfolds
gradually, in response to long-term environmental change.

How can morphological innovations trigger adaptive radiations? correct answers They allow organisms
to exploit resources in new ways.

How can ecological opportunity trigger adaptive radiations? correct answers They allow organisms to
exploit resources that are not being used by other organisms.

What is the logic behind the "new genes, new bodies" hypothesis for the Cambrian explostion? correct
answers New copies of genes that regulate development could make morphological innovations
possible.

What is the definition of a mass extinction? correct answers 60% of the species alive are wiped out in
less than 1 million years.

What's the major difference between background extinction and mass extinction? correct answers Mass
extinctions are intense but short-lived.

In terms of its impact on the array of species present, a mass extinction is most closely analogous to
which evolutionary force? correct answers drift (random changes in which species are present)

The benefits of buying summaries with Stuvia:

Guaranteed quality through customer reviews

Guaranteed quality through customer reviews

Stuvia customers have reviewed more than 700,000 summaries. This how you know that you are buying the best documents.

Quick and easy check-out

Quick and easy check-out

You can quickly pay through credit card or Stuvia-credit for the summaries. There is no membership needed.

Focus on what matters

Focus on what matters

Your fellow students write the study notes themselves, which is why the documents are always reliable and up-to-date. This ensures you quickly get to the core!

Frequently asked questions

What do I get when I buy this document?

You get a PDF, available immediately after your purchase. The purchased document is accessible anytime, anywhere and indefinitely through your profile.

Satisfaction guarantee: how does it work?

Our satisfaction guarantee ensures that you always find a study document that suits you well. You fill out a form, and our customer service team takes care of the rest.

Who am I buying these notes from?

Stuvia is a marketplace, so you are not buying this document from us, but from seller MastersSetQuizes. Stuvia facilitates payment to the seller.

Will I be stuck with a subscription?

No, you only buy these notes for $8.19. You're not tied to anything after your purchase.

Can Stuvia be trusted?

4.6 stars on Google & Trustpilot (+1000 reviews)

71241 documents were sold in the last 30 days

Founded in 2010, the go-to place to buy study notes for 15 years now

Start selling

Recently viewed by you

Package deal ·

(0)

medicatie opdrachten voor de opleiding verzorgende IG
$8.19
  • (0)
Add to cart
Added