The Cambrian radiation. Introduction: Animal phylogeny is the rapidly changing field. Biologists mostly depend on the fossils to compare the similarities of body plan and the pattern of development to determine the evolutionary relationships among various animal groups. Explosion in biological terms refers to the increase in size of the population and its complexity in a large scale. Explosion shows adaptive radiation as a part of evolution that occurs. The Cambrian period falls under the Paleozoic era during which major evolution of invertebrates began.

Question

Want to see the full answer?

Answer 1

Question

Chapter 30.3, Problem 1C

Summary Introduction

To explain: The Cambrian radiation.

Introduction: Animal phylogeny is the rapidly changing field. Biologists mostly depend on the fossils to compare the similarities of body plan and the pattern of development to determine the evolutionary relationships among various animal groups. Explosion in biological terms refers to the increase in size of the population and its complexity in a large scale. Explosion shows adaptive radiation as a part of evolution that occurs. The Cambrian period falls under the Paleozoic era during which major evolution of invertebrates began.

Expert Solution & Answer

Want to see the full answer?

Check out a sample textbook solution

See solution

Students have asked these similar questions

Transcription and Translation 1. What is the main function of transcription and translation? (2 marks) 2. How is transcription different in eukaryotic and prokaryotic cells? (2 marks) 3. Explain the difference between pre-mRNA and post-transcript mRNA. (2 marks) 4. What is the function of the following: (4 marks) i. the cap ii. spliceosome iii. Poly A tail iv. termination sequence 5. What are advantages to the wobble feature of the genetic code? (2 marks) 6. Explain the difference between the: (3 marks) i. A site & P site ii. codon & anticodon iii. gene expression and gene regulation 7. Explain how the stop codon allows for termination. (1 mark) 8. In your own words, summarize the process of translation. (2 marks)

In this activity you will research performance enhancers that affect the endocrine system or nervous system. You will submit a 1 page paper on one performance enhancer of your choice. Be sure to include: the specific reason for use the alleged results on improving performance how it works how it affect homeostasis and improves performance any side-effects of this substance

Neurons and Reflexes 1. Describe the function of the: a) dendrite b) axon c) cell body d) myelin sheath e) nodes of Ranvier f) Schwann cells g) motor neuron, interneuron and sensory neuron 2. List some simple reflexes. Explain why babies are born with simple reflexes. What are they and why are they necessary. 3. Explain why you only feel pain after a few seconds when you touch something very hot but you have already pulled your hand away. 4. What part of the brain receives sensory information? What part of the brain directs you to move your hand away? 5. In your own words describe how the axon fires.