1. How do Cerberus, Noggin, Chordin, BMPs and Wnt establish cell fate along the Dorsal-ventral and anterior-posterior axis?
1. How do Cerberus, Noggin, Chordin, BMPs and Wnt establish cell fate along the Dorsal-ventral and...
1) What are the different neural progenitor fates that are specified along the dorsal-ventral axis of the neural tube? Why is it important - what are the different neural fates that have to be made? 2) How are different neural fates specified in the ventral half of the neural tube?
. What does alcian blue stain? 2. What does alzerin red stain? How do you predict LiCl treatment of zebrafish embryos will affect anterior-posterior axis formation? Will the fish have diminished anterior structures and expanded posterior structures or will the fish have expanded anterior structures and diminished posterior structures? 6. In LiCl treated fish, what parts of the skeleton (bone or cartilage) do you predict will be absent? 7. How do you predict cyclopamine treatment of zebrafish embryos will affect...
How do I know if I am looking at a Ventral or a Dorsal view of the brainstem?
Developmental Biology Discuss how the dorsal-ventral axis is established in amphibian or fish embryos. You should include in your answer the names of the most important molecules. Feel free to discuss manipulations such as knockouts that have provided evidence.
1) The Shh (sonic hedgehog) signaling molecule is important for patterning the dorsal-ventral axis of the spinal cord. Briefly describe where Shh is expressed and how its expression patterns the spinal cord. 2)What is the role of the proliferating chondrocytes and hypertophic chondrocytes in bone development and bone growth? a) Proliferating chondrocytes: b) Hypertrophic chondrocytes:
please help! I also took a closer picture of the images.. thank you! (1) Explain why neural crest cells migrating in the path2 migrate into the anterior but not posterior somite. Use terms: ephrin, Eph. (Ept) (2) In the intact condition of mouse, the Notch signaling keeps the neural precursors in an immature c proliferation state to expand the number of neuronal cells in later. Explain what will happen if the constitutive active form of Notch (continuously active Notch) is...
Muscle movement 1 pt Spinal cord Dorsal The image to the right depicts a motor neuron along with all of the muscle fibers it innervates. What is this called? Cell body of motor neuron Muscle fibers Ventral O Motor axon O Motor unit O Neuromuscular junction Muscle
Chapter 32: Overview of Animal Diversity 1. Like the fungi, animals are multicellular heterotrophs. How do they feed? 2. What two types of specialized cells do only animals have? 3. Most animals reproduce and the stage dominates the life cycle. 4. What is animal Development? 5. Define/describe each term: zygote: cleavage: blastula: gastrulation: gastrula: blastopore: metamorphosis: 7. All eukaryotes have sets of regulatory genes containing common sets of DNA sequences called homeoboxes. What are the unique homeobox genes of animals...
1) Why do genes on the same chromosome not segregate with “Mendelian Genetics”? Why/How do the frequencies of their co-segregation vary depending on their exact location? 2) Why does separating the left/right halves versus the dorsal/ventral halves of a two-cell stage amphibian embryo yield different results? 3) Why does the transplantation of an early blastopore lip induce head formation, while a late blastopore lip induces a tail?
please answer all 3 questions asap Question 1 3 pts Some of the genes important in embryonic development are dependent upon the maternal genotype rather than the genotype of the embryo. How does this maternal information get transmitted to the embryo? During egg development, pieces of maternal DNA are moved into the embryo to temporarily allow transcription and translation of maternal DNA During egg development, proteins transcribed and translated in maternal nurse cells are moved into the embryo During egg...