A. Answer the following questions briefly (3-5 sentences only). 1. How are the three axes for symmetry in the animal bodies established? 2. Explain how the different germ layers give rise to different tissue types. 3. Explain the role of axis formation in development B. write down the autapomorphic traits for the c3, c4, CAM plants and include their distinct environments

A. Answer the following questions briefly (3-5 sentences only). 1. How are the three axes for symmetry in the animal bodies established? 2. Explain how the different germ layers give rise to different tissue types. 3. Explain the role of axis formation in development B. write down the autapomorphic traits for the c3, c4, CAM plants and include their distinct environments

Biology: The Dynamic Science (MindTap Course List)

4th Edition

ISBN:9781305389892

Author:Peter J. Russell, Paul E. Hertz, Beverly McMillan

Publisher:Peter J. Russell, Paul E. Hertz, Beverly McMillan

Chapter50: Animal Development

Section: Chapter Questions

Problem 10TYK

See similar textbooks

Similar questions

What are morphogens, exactly? Explain how they affect the patterning of tissue throughout embryonic development. Give 4 concrete instances to back up your claims.
Describe the dorsolateral and ventrolateral migration of trunk neural crest cells. Provide details as to the timing of the migration, pathways taken, eventual fate, and location of the neural crest cells that follow each pathway or portion of the pathways. Include a simple drawing that depicts both pathways .
A. Who is Dolly? B. When a zygote divides into two separate cells, it is called
Which of the following is an illustration of permissive interaction? The epidermis signals the underlying dermis to create condensations and the dermal condensations then signal the epidermis to form specific cutaneous structures. Wing epidermal epithelium produces wing feather when exposed to wing dermal mesenchyme but will produce scales and claw when exposed to foot dermal mesenchyme. When implanted in the newt embryo, the frog oral ectoderm can only differentiate into frog derivatives and will not differentiate into newt derivatives. D An inducing signal from the optic vesicle is necessary for new gene expression in the lens ectoderm. E) Contact with the appropriate extracellular matrix is sufficient for cells to express differentiation-specific genes.
a. What are the physical differences and similarities in the reproduction systems of plants and animals? b. What is the difference of morphogenesis in plants and animals?
What is true of the Progress Zone model? a) the length of time a cell resides in the progress zone dictates its identity along the proximodistal axis b) it is consistent with the outcome of removing the AER at successively later stages of limb development c) once a cell leaves the progress zone, its identity is established along the proximodistal axis d) cells of the progress zone are stimulated to divide by the AER e) all of the above You isolate a new mutant chicken strain in which limb outgrowth is severely curtailed. Limbdevelopment begins and the AER initially forms, but the AER then degenerates and subsequent development of the limb is aborted. Which of the following is a possible explanation for the AER phenotype? a) the mutant gene may function cell autonomously in the AER b) the mutant gene may function cell-nonautonomously in the limb bud mesenchyme c) the mutant gene may interfere with the feedback loop between the mesenchyme and AER d) all of the above
A: Why do sea urchins have external fertilization? [Discuss the life style of the developing sea urchin embryo in the water column compared to a very different ecological niche of the adults on the ocean floor. Besides, would you want to give live birth to a sea urchin! ouch!] 2: Then why don't the parents take care of the young? [In fact the adults do in a way. After the embryo has grown large enough and metamorphosed into a young urchin they hide in the spines of the adults, living off of the scraps of food produced from the messy eating of the adults] 3: Because the urchin life involves two or more ecological niches, they are more susceptible to predation and exposure to environmental toxins. What environmental conditions, predators and toxins might they be exposed to at each stage?
What are morphogens? Explain how they influence tissue patterning during embryonic development. Describe TWO specific examples to support your explanation.
There are 6 major events in fertilization. Discuss the process of fertilization or conception, with emphasis on the sperm-egg interaction. Proteins on the sperm plasma membrane bind to ZP3 molecules within the zona pellucida of the egg. Why is this event important? Zona binding triggers the acrosome reaction, in which the sperm plasma membrane fuses with the outer acrosomal membrane, causing exocytosis of acrosomal contents. What is in the "acrosomal content"? Acrosomal enzymes begin to dissolve a hole in the zona pellucida. This enzymatic degradation, accompanied by rapid sperm tail beating, moves the sperm through the zona. Where does the sperm intend to reach?
+Describe the process of implantation of the embryo, what cells are involved and their roles. +Describe placentation
In neurulation, what cell types are involved? What morphogens are present (and antagonists)? What transcription factors are there? What tissues/tissue types are there? What are the signaling pathways used and how do each function? What's the end goal, and what is the response in development? Draw a labeled diagram or detailed flow chart of neurulation in embryos to show this.(FYI, this is one practice question. No grading involved.)
Please answer the following questions about Apert Syndrom: What is Apert syndrome? Are there variations of this genetic disorder? What are the symptoms and complications? What is the diagnosis? What are the carriers (genes)? What is it like for someone living this way?