« previous next »

Author Question: During chordate evolution, what is the sequence (from earliest to most recent) i (Read 626 times)

federox

  • Sr. Member
  • ****
  • Posts: 308
on: Aug 8, 2013
During chordate evolution, what is the sequence (from earliest to most recent) in which the following structures arose?
1.    amniotic egg
2.    paired fins
3.    jaws
4.    swim bladder
5.    four-chambered heart
A) 2, 3, 4, 1, 5
B) 3, 2, 4, 1, 5
C) 3, 2, 1, 4, 5
D) 2, 1, 4, 3, 5
E) 2, 4, 3, 1, 5


theo

  • Hero Member
  • *****
  • Posts: 698
Reply #1 on: Aug 10, 2013
Answer has to be A, 100% :D


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
« previous next »
 

Did you know?

The senior population grows every year. Seniors older than 65 years of age now comprise more than 13% of the total population. However, women outlive men. In the 85-and-over age group, there are only 45 men to every 100 women.

Did you know?

No drugs are available to relieve parathyroid disease. Parathyroid disease is caused by a parathyroid tumor, and it needs to be removed by surgery.

Did you know?

Asthma occurs in one in 11 children and in one in 12 adults. African Americans and Latinos have a higher risk for developing asthma than other groups.

Did you know?

There are over 65,000 known species of protozoa. About 10,000 species are parasitic.

Did you know?

When intravenous medications are involved in adverse drug events, their harmful effects may occur more rapidly, and be more severe than errors with oral medications. This is due to the direct administration into the bloodstream.

Genetic control of eye evolution. Genetic control of eye evolution.
A Summary of Stellar Evolution A Summary of Stellar Evolution
Morotopithecus is the earliest fossil ape to show postcranial adaptations similar to those of the li Morotopithecus is the earliest fossil ape to show postcranial adaptations similar to those of the li
Model of how direct repeats generated during the insertion of a transposon or an insertion sequence Model of how direct repeats generated during the insertion of a transposon or an insertion sequence
Common restriction enzymes, with their recognition sequence, DNA cutting patterns, and sources Common restriction enzymes, with their recognition sequence, DNA cutting patterns, and sources
evolution tree evolution tree
Video: Glycolysis - Introduction to ATP and the burning of sugar

For a complete list of videos, visit our video library