The molecular mechanism which decides the fate of neural crest cells, to express at the right time and in the correct form of representation. Introduction: Neural crest cells consists a tendency to differentiate into astonishing array of adult structures. The control of differentiation is explained by two opposing hypothesis. One of them proposed that, all neural crest cells contains an equal developmental potential, and their migration and fate is totally depends upon the environmental signals. The second hypothesis suggests that premigratory crest cells are programmed for different developmental behaviour. The migration pathways are regulated by the complex array of guidance molecules both attractive and repulsive.

Question

Want to see the full answer?

Answer 1

Question

Chapter 17, Problem 4DQ

Summary Introduction

To review:

The molecular mechanism which decides the fate of neural crest cells, to express at the right time and in the correct form of representation.

Introduction:

Neural crest cells consists a tendency to differentiate into astonishing array of adult structures. The control of differentiation is explained by two opposing hypothesis. One of them proposed that, all neural crest cells contains an equal developmental potential, and their migration and fate is totally depends upon the environmental signals. The second hypothesis suggests that premigratory crest cells are programmed for different developmental behaviour. The migration pathways are regulated by the complex array of guidance molecules both attractive and repulsive.

Expert Solution & Answer

Want to see the full answer?

Check out a sample textbook solution

See solution

Students have asked these similar questions

NEED ASAP THANKS A 25-year-old G1P0 seeks consult at a Maternity Clinic. A non-stress test was requested by the attending physician. During the procedure, the tracing displays a relatively flat line for fetal movement, making it difficult to evaluate the fetal heart rate (FHR). To mark the strip, the nurse in charge should instruct the client to push the control button at which time? a. At the end of fetal movement b. At the beginning of each contraction c. At the beginning of each fetal movement d. After every three fetal movements

IDENTIFICATION (Subject - Development Biology) 1. It is a historical transformation of the forms of life starting from the simple forms of the past to the complex forms of the present? 2. This is formed when small group of cells segregate from another group of cells? 3. Its a process when one embryonic region interacts with the second and affects the second regions differentiation or behaviour?

Need help 1 and 2 1.) Which of the following change occurs during the third trimester of fetal development? A. Skin appears bright pink due to blood-filled capillaries B. Lanugo hair develops C. Bone development begins D. All red bood cells are formed in the bone marrow 2.) Hormones play an important role in controlling the development and general metabolism of the human body Hormones are secreted by ductless glands called endocrine glandsFrom the following endocrine glands choose the one that develops from the ectoderm : A. Adrenal cortex B. Parathyroid gland C. Pituitary gland D. Thyroid gland