« previous next »

Author Question: Three living species X, Y, and Z share a common ancestor T, as do extinct specie (Read 1631 times)

geoffrey

  • Hero Member
  • *****
  • Posts: 880
on: Jul 14, 2013
Three living species X, Y, and Z share a common ancestor T, as do extinct species U and V. A grouping that consists of species T, X, Y, and Z (but not U or V) makes up
A) a valid taxon.
B) a monophyletic clade.
C) an ingroup, with species U as the outgroup.
D) a paraphyletic group.
E) a polyphyletic group.


penguins

  • Hero Member
  • *****
  • Posts: 903
Reply #1 on: Jul 15, 2013
Easy! It's D. Bye for now :D


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question

geoffrey

  • Hero Member
  • *****
  • Posts: 880
Reply #2 on: Aug 1, 2013
Thank you!


« previous next »
 

Did you know?

There are more nerve cells in one human brain than there are stars in the Milky Way.

Did you know?

Lower drug doses for elderly patients should be used first, with titrations of the dose as tolerated to prevent unwanted drug-related pharmacodynamic effects.

Did you know?

Russia has the highest death rate from cardiovascular disease followed by the Ukraine, Romania, Hungary, and Poland.

Did you know?

Despite claims by manufacturers, the supplement known as Ginkgo biloba was shown in a study of more than 3,000 participants to be ineffective in reducing development of dementia and Alzheimer’s disease in older people.

Did you know?

Side effects from substance abuse include nausea, dehydration, reduced productivitiy, and dependence. Though these effects usually worsen over time, the constant need for the substance often overcomes rational thinking.

Keystone species. Keystone species.
Common traditional surgical incisions Common traditional surgical incisions
Common Speedwell Common Speedwell
All living organisms descended from a common ancestral cell All living organisms descended from a common ancestral cell
People who share genes will often have similar body weights People who share genes will often have similar body weights
Video: Transferring genes into plants Animation

For a complete list of videos, visit our video library