Difficulty in the evolution of gnathostomes

Assignment Help Biology
Reference no: EM132412698

One difficulty in the evolution of gnathostomes (that we completely ignored) is the fact that the earliest jawed placoderms did not have a jaw structure that can be directly matched with modern gnathostomes. Specifically, these ancestral placoderms had a upper and lower jaws each with a single element made of endochondral bone with no teeth. Why would this situation be a problem for discussing the evolution of modern gnathostome jaws? Apply the phylogeny and development course themes to propose a hypothesis to explain how the modern gnathostome jaw could have evolved from these precursors. For each theme, what type of evidence would you need to support this hypothesis and why would that evidence support your ideas?

Reference no: EM132412698

Questions Cloud

Provide a diagram for the qubit setup : Please explain, can you provide a diagram for the qubit setup?
Explain the parts and structure of satellite glial cells : 1) Explain the parts and structure of satellite glial cells (nerve cell).
How public administration differs from private management : Relationship between the federal Administrative Procedures Act (APA) and the uniform state APA of 1946 - Explain how Public Administration differs from Private
Understanding of developmental process in vertebrates : Your instructor has a sad, disturbing fascination with the Teenage Mutant Ninja Turtles (TMNT). The TMNT were supposed to be young turtles
Difficulty in the evolution of gnathostomes : One difficulty in the evolution of gnathostomes (that we completely ignored) is the fact that the earliest jawed placoderms did not have a jaw structure
Vertebrate circulatory and respiratory systems : Vertebrate circulatory and respiratory systems are tightly integrated, but when we examine non-vertebrate chordates, we typically find either both systems
Improving Data Collection across the Health Care System : Assignment - Improving Data Collection across the Health Care System. How to train staff to elicit this information in a respectful and ef?cient manner
BUMGT5970 Leadership Assignment Problem : BUMGT5970 Leadership Assignment Help and Solution, Federation University - Assessment Writing Service - how leadership might be exercised.
ISM 3113 Systems Analysis and Design Assignment : ISM 3113 Systems Analysis and Design Assignment Help and Solution - University of South Florida, USA. Evaluate the Heineken Case posted in the final exam module

Reviews

Write a Review

Biology Questions & Answers

  Immune response to infectious disease

It is a very curcial concept to understand how the immune response is mounted against viruses, bacteria, protozoans and helminthes. For an effective immune response, both innate and adaptive immunity should work together.

  A review on advanced glycated end products (ages)

This Project report elaborates a critical review of important elements attached to Advanced Glycated End Products (AGEs). It is very crucial to understand the process called Millard reaction.

  Plastic as a soil stabilizer

Soil stabilization is the permanent physical and chemical alteration of soils to enhance their physical properties. Stabilization can increase the shear strength of a soil and control the shrink-swell properties.

  Principles of microbiology

This assignment has three parts which contains questions related to Microbiology. It contains basic principles of microscopy, staining techniques in microbiology and microbial growth in the food industry.

  List the biologic functions

Lipid metabolites are often seen as key elements in cellular signaling. Is this unique? Please provide several examples of the function of lipids as key elements in signal arrays and list the biologic functions these signals affect?

  Biologic function relationships

Please describe how one might search for chemical structure, biologic function relationships, involving small molecular weight lipophylic compounds. Provide one example.

  Case study on patient in the haematology laboratory

Write a case study which detailing a scenario of a patient being investigated in the Haematology laboratory.

  Use of pcr and genetic approaches in biotechnology

The use of PCR and genetic approaches in biotechnology

  Describe the role of this enzyme in honey

Glucose oxidase is an enzyme that can be used for measurements of glucose levels by combining this reaction with an oxygen probe.

  Genetic problems

What phenotypic ratio would you get if you crossed a white mouse and a heterozygous brown mouse?

  Prepare an essay on nosocomial infection

Prepare an essay on nosocomial infection.

  Monitoring and recording the blood pressure

To increase the awareness of monitoring and recording the blood pressure of patients and practice measuring blood pressure in a safe environment.

Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd