« previous next »

Author Question: Three living species X, Y, and Z share a common ancestor T, as do extinct specie (Read 1650 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?

Although the Roman numeral for the number 4 has always been taught to have been "IV," according to historians, the ancient Romans probably used "IIII" most of the time. This is partially backed up by the fact that early grandfather clocks displayed IIII for the number 4 instead of IV. Early clockmakers apparently thought that the IIII balanced out the VIII (used for the number 8) on the clock face and that it just looked better.

Did you know?

Medication errors are more common among seriously ill patients than with those with minor conditions.

Did you know?

Carbamazepine can interfere with the results of home pregnancy tests. If you are taking carbamazepine, do not try to test for pregnancy at home.

Did you know?

For high blood pressure (hypertension), a new class of drug, called a vasopeptidase blocker (inhibitor), has been developed. It decreases blood pressure by simultaneously dilating the peripheral arteries and increasing the body's loss of salt.

Did you know?

Drugs are in development that may cure asthma and hay fever once and for all. They target leukotrienes, which are known to cause tightening of the air passages in the lungs and increase mucus productions in nasal passages.

Common arachnids. Common arachnids.
The Venus flytrap, a species of carnivorous plant. The Venus flytrap, a species of carnivorous plant.
California sea lions are common prey for mammal-eating killer whales on the west coast of North Amer California sea lions are common prey for mammal-eating killer whales on the west coast of North Amer
The Common Pochard - female The Common Pochard - female
Common skin signs are often evidence of an illness or disorder. A scale is a thin, dry flake of ... Common skin signs are often evidence of an illness or disorder. A scale is a thin, dry flake of ...
Living and non living things Living and non living things
Video: Introduction to Human Immunodeficiency Virus (HIV)

For a complete list of videos, visit our video library