« previous next »

Author Question: During chordate evolution, what is the sequence (from earliest to most recent) i (Read 620 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?

Recent studies have shown that the number of medication errors increases in relation to the number of orders that are verified per pharmacist, per work shift.

Did you know?

This year, an estimated 1.4 million Americans will have a new or recurrent heart attack.

Did you know?

The oldest recorded age was 122. Madame Jeanne Calment was born in France in 1875 and died in 1997. She was a vegetarian and loved olive oil, port wine, and chocolate.

Did you know?

There are 60,000 miles of blood vessels in every adult human.

Did you know?

The Centers for Disease Control and Prevention has released reports detailing the deaths of infants (younger than 1 year of age) who died after being given cold and cough medications. This underscores the importance of educating parents that children younger than 2 years of age should never be given over-the-counter cold and cough medications without consulting their physicians.

Post–Main-Sequence Evolution of Low-Mass Stars Post–Main-Sequence Evolution of Low-Mass Stars
Lamarckian and Darwinian views of evolution Lamarckian and Darwinian views of evolution
The skull of Sahelanthropus tchadensis is argued to be the earliest of the hominins and one of only The skull of Sahelanthropus tchadensis is argued to be the earliest of the hominins and one of only
Young recent immigrants often develop two identities Young recent immigrants often develop two identities
Sequence of nucleotides in a DNA molecule Sequence of nucleotides in a DNA molecule
evolution evolution
Video: Structures that affect circulation - kidneys, blood volume and venous tone

For a complete list of videos, visit our video library