Biology
5th Edition
ISBN: 9781260487947
Author: BROOKER
Publisher: MCG
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Chapter 20.2, Problem 1CC
Development in Animals I: Pattern Formation
Concept Check: What would you expect to be the
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IDENTIFICATION (Subject - Development Biology)
1. It refers to the arrangement of the mitochondria, golgi apparatus, yolk and pigment granules?
2. It shows the organ forming tissues?
3. It is a genes which are active all throughout development
Draw a serial transverse section of 18 hour chick embryo.
Neurulation in model vertebrates and in fly follows soon after gastrulation.Do vertebrates and fly-related invertebrates adopt different strategies forneural development, both at the cellular and molecular level?
Chapter 20 Solutions
Biology
Ch. 20.1 - 20.1 General Themes in Development Concept Check:...Ch. 20.1 - Prob. 2CCCh. 20.1 - Prob. 1CSCh. 20.2 - Development in Animals I: Pattern Formation...Ch. 20.2 - Development in Animals I: Pattern Formation...Ch. 20.2 - Prob. 3CCCh. 20.2 - Core Skill: Modeling The goal of this modeling...Ch. 20.2 - Development in Animals I: Pattern Formation Core...Ch. 20.3 - Development in Animals II: Cell Differentiation...Ch. 20.3 - Development in Animals II: Cell Differentiation...
Ch. 20.3 - Development in Animals II: Cell Differentiation...Ch. 20.3 - Development in Animals II: Cell Differentiation...Ch. 20.3 - Development in Animals II: Cell Differentiation...Ch. 20.4 - Development in Plants Concept Check: Where are...Ch. 20.4 - Prob. 2CCCh. 20 - The process whereby a cells morphology and...Ch. 20 - Prob. 2TYCh. 20 - Positional information is important in determining...Ch. 20 - Morphogens are a. molecules that disrupt normal...Ch. 20 - Prob. 5TYCh. 20 - Arrange the following phases of pattern formation...Ch. 20 - Prob. 7TYCh. 20 - Which of the following genes do not play a role in...Ch. 20 - An embryonic stem cell that can give rise to any...Ch. 20 - Prob. 10TYCh. 20 - Prob. 1CQCh. 20 - The MyoD gene in mammals plays a role in muscle...Ch. 20 - Prob. 3CQCh. 20 - Prob. 1COQCh. 20 - Is it possible for a phenotypically normal female...
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- Discuss Concepts Arguably, in sexually reproducing animals, development begins when eggs and sperm form in the parents. In a paragraph, explain the rationale for this idea.arrow_forwardDiscuss Concepts Experimentally, it is possible to divide an amphibian egg so that the gray crescent is wholly within one of the two cells formed. If the two cells are separated, only the cell with the gray crescent will form an embryo with a long axis, notochord, nerve cord, and back musculature. The other forms a shapeless mass of immature gut and blood cells. Propose an explanation for these outcomes.arrow_forwardDiscuss Concepts Developmental biologist Lewis Wolpert once observed that it is not birth, marriage or death, but gastrulation which is truly the most important time in your life. In what sense is he correct?arrow_forward
- VISUAL SKILLS In this diagram, does the sperm cell that fertilizes the egg cell differ geneticallyfrom the egg? Explain.arrow_forwardMatch the following some are redundant please explain why?: Axis specification Pattern formation Genes encoding Nodal signnaling pathway members. Achondroplasia A gene which when present on th X chromosome due to a translocation cause 46, XX Differences in sex development. Organogenesis A family of genes which are found in 4 clusters of several related genes on the hiuman chromosomes . Genes which are found on the chromosomes in the same order as their expression pattern along with anterior-posterior axis in the early vertebrate embryo. HOX genes SOX9 SRY Cells moving and changing shape to form the alveoli of the developing lung Mutations in these genes can cause congenital heart defects PAX6 Establishing which cells will later become each of the different parts of the eye Establishing which cells in the early embryo will develop into the front or the back A condition caused by mutations in a gene encoding a FGF receptor Pax genesarrow_forwardGradients of morphogens can be preestablished in the oocyte. Also, later in development, morphogens can be secreted from cells. How are these two processes similar and different?arrow_forward
- Cleavage divides the eggs of vertebrates and many other animals into a cluster of separate cells. By contrast, theequivalent stage in the Drosophila embryo generates a syncytium. How does the presence of a syncytium affectthe early development of Drosophila?arrow_forward5. Provide three differences of the endodermal parts of the 72-hour chick embryo with the 10 mmpig embryo?arrow_forwardDiscuss the role of homeotic genes in development. Explain what happens to the phenotype of a fruit fly when a gain-of-function mutation in a homeotic gene causes the protein to be expressed in an abnormal region of the embryo. What are the consequences of a loss-of-function mutation in such a gene?arrow_forward
- DO all of them please Multiple chpoice 11. Threshold concentration, morphogens, induction, and cell adhesion provide ________ to a developing organism.A) positional informationB) maternal effect genesC) homeodomainsD) lineage tracingAnswer: 12) What is the first stage of embryonic pattern development in Drosophila?A) limb positionB) body axesC) segmentation patternsD) metamorphosisAnswer: 13) A Drosophila larva that develops from an oocyte that has no bicoid mRNA will have what developmental defect?A) only ventral structuresB) no dorsal structuresC) only anterior structuresD) only posterior structuresAnswer: 14) The bicoid gene has what pattern of inheritance?A) sex-linkedB) incomplete penetranceC) maternal inheritanceD) autosomalAnswer: 15) A homeotic mutation results in which of the following?A) Incorrect formation of the body axesB) Replacement of segments with parasegmentsC) Replacing of one body part with anotherD) ApotosisAnswer: 16) Antennapedia in Drosophila is an example of a…arrow_forwardEctodermal Derivatives of the 10 mm Pig Embryo QUESTIONS: State the neuromere origin of each brain region?arrow_forwardIDENTIFICATION (Subject - Development Biology) 1. 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. Process when one embryonic region interacts with the second and affects the second regions differentiation or behaviour?arrow_forward
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