« previous next »

Author Question: Jaws first occurred in which extant group of fishes? A) lampreys B) chondrichthy (Read 1952 times)

federox

  • Sr. Member
  • ****
  • Posts: 308
on: Aug 8, 2013
Jaws first occurred in which extant group of fishes?
A) lampreys
B) chondrichthyans
C) ray-finned fishes
D) lungfishes
E) placoderms


theo

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


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question

vicky

  • Hero Member
  • *****
  • Posts: 586
Reply #2 on: Nov 4, 2014
thank you


vickyvicksss

  • Sr. Member
  • ****
  • Posts: 351
Reply #3 on: Jan 19, 2015
thank you


« previous next »
 

Did you know?

In 2006, a generic antinausea drug named ondansetron was approved. It is used to stop nausea and vomiting associated with surgery, chemotherapy, and radiation therapy.

Did you know?

Glaucoma is a leading cause of blindness. As of yet, there is no cure. Everyone is at risk, and there may be no warning signs. It is six to eight times more common in African Americans than in whites. The best and most effective way to detect glaucoma is to receive a dilated eye examination.

Did you know?

Chronic necrotizing aspergillosis has a slowly progressive process that, unlike invasive aspergillosis, does not spread to other organ systems or the blood vessels. It most often affects middle-aged and elderly individuals, spreading to surrounding tissue in the lungs. The disease often does not respond to conventionally successful treatments, and requires individualized therapies in order to keep it from becoming life-threatening.

Did you know?

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

Did you know?

Human kidneys will clean about 1 million gallons of blood in an average lifetime.

Darters such as this male greenside darter form a diverse and distinctive subfamily of fishes within Darters such as this male greenside darter form a diverse and distinctive subfamily of fishes within
Elk pellet group Elk pellet group
Scientists (group photo) Scientists (group photo)
Comparison of group II self-splicing introns and the spliceosome Comparison of group II self-splicing introns and the spliceosome
Sea lampreys: petromyzon marinus "بتروميزون مارينوس" Sea lampreys: petromyzon marinus "بتروميزون مارينوس"
In 1974 a UC Berkeley group fired an oxygen nucleus at a californium target. Giv In 1974 a UC Berkeley group fired an oxygen nucleus at a californium target. Giv
Video: Anatomy and Chemical Makeup of a Single Hair (Animation)

For a complete list of videos, visit our video library