« previous next »

Author Question: Jaws first occurred in which extant group of fishes? A) lampreys B) chondrichthy (Read 1957 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?

The toxic levels for lithium carbonate are close to the therapeutic levels. Signs of toxicity include fine hand tremor, polyuria, mild thirst, nausea, general discomfort, diarrhea, vomiting, drowsiness, muscular weakness, lack of coordination, ataxia, giddiness, tinnitus, and blurred vision.

Did you know?

Persons who overdose with cardiac glycosides have a better chance of overall survival if they can survive the first 24 hours after the overdose.

Did you know?

Symptoms of kidney problems include a loss of appetite, back pain (which may be sudden and intense), chills, abdominal pain, fluid retention, nausea, the urge to urinate, vomiting, and fever.

Did you know?

The largest baby ever born weighed more than 23 pounds but died just 11 hours after his birth in 1879. The largest surviving baby was born in October 2009 in Sumatra, Indonesia, and weighed an astounding 19.2 pounds at birth.

Did you know?

Approximately 15–25% of recognized pregnancies end in miscarriage. However, many miscarriages often occur before a woman even knows she is pregnant.

group of hinds with calves group of hinds with calves
This 11-month old girl demonstrates one of the abilites of a child of this age group - creating a to This 11-month old girl demonstrates one of the abilites of a child of this age group - creating a to
ABO Blood Group ABO Blood Group
GDP per Capita by Country Group, 1820–2008 GDP per Capita by Country Group, 1820–2008
Self-splicing of group I introns Self-splicing of group I introns
Production of ABO blood group antigens Production of ABO blood group antigens
Video: Introduction to Human Immunodeficiency Virus (HIV)

For a complete list of videos, visit our video library