« previous next »

Author Question: Which of the following could be considered the most recent common ancestor of li (Read 551 times)

federox

  • Sr. Member
  • ****
  • Posts: 308
on: Aug 8, 2013
Which of the following could be considered the most recent common ancestor of living tetrapods?
A) a sturdy-finned, shallow-water lobe-fin whose appendages had skeletal supports similar to those of terrestrial vertebrates
B) an armored, jawed placoderm with two pairs of appendages
C) an early ray-finned fish that developed bony skeletal supports in its paired fins
D) a salamander that had legs supported by a bony skeleton but moved with the side-to-side bending typical of fishes
E) an early terrestrial caecilian whose legless condition had evolved secondarily


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?

Illicit drug use costs the United States approximately $181 billion every year.

Did you know?

An identified risk factor for osteoporosis is the intake of excessive amounts of vitamin A. Dietary intake of approximately double the recommended daily amount of vitamin A, by women, has been shown to reduce bone mineral density and increase the chances for hip fractures compared with women who consumed the recommended daily amount (or less) of vitamin A.

Did you know?

As the western states of America were settled, pioneers often had to drink rancid water from ponds and other sources. This often resulted in chronic diarrhea, causing many cases of dehydration and death that could have been avoided if clean water had been available.

Did you know?

People with alcoholism are at a much greater risk of malnutrition than are other people and usually exhibit low levels of most vitamins (especially folic acid). This is because alcohol often takes the place of 50% of their daily intake of calories, with little nutritional value contained in it.

Did you know?

There are 20 feet of blood vessels in each square inch of human skin.

Common traditional surgical incisions Common traditional surgical incisions
Recent Impacts on the Moon Recent Impacts on the Moon
Common errors in blood pressure assessment Common errors in blood pressure assessment
In addition to common schools, thousands of female seminaries were built between 1820 and 1850, many In addition to common schools, thousands of female seminaries were built between 1820 and 1850, many
Common Oral Lesions/Conditions Associated with HIV Infections and Treatment Guidelines Common Oral Lesions/Conditions Associated with HIV Infections and Treatment Guidelines
Recent research suggests that zinc lozenges and nasal gels may help reduce the severity Recent research suggests that zinc lozenges and nasal gels may help reduce the severity
Video: Segmentation and migrating motility complexes & Gastroileal reflex

For a complete list of videos, visit our video library