Question: 1) Define Serial Homology. How Do The Jointed Appendages Of The Crayfish Illustrate This Concept? 2)What Is The Scientific Name For The Large Pincers Of The Crayfish? Including The Pincers, How Many Pairs Of Walking Legs Does The Crayfish Have? Name The Appendages Found On The Abdomen Of The Crayfish. How Can You Identify The Sex Of The Specimen By …

1) Define serial homology. How do the jointed appendagesof the crayfish illustrate this concept?

2)What is the scientific name for the large pincers ofthe crayfish? Including the pincers, how many pairs of walking legsdoes the crayfish have? Name the appendages found on the abdomen ofthe crayfish. How can you identify the sex of the specimen byexamining these appendages? What special use do they have in thefemale?    

3)What is the scientific name for the brain of thecrayfish? Along what surface of the crayfish body does the nervecord run? (Use anatomical terminology)