1 SEM ACC W/RAVEN CARDED
12th Edition
ISBN: 9781265486297
Author: Raven
Publisher: MCGRAW-HILL HIGHER EDUCATION
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Textbook Question
Chapter 52, Problem 6A
Axis formation in amniotic embryos could be affected by
a. mutations in cells in the dorsal lip of the blastopore.
b. mutations in cells in the primitive streak.
c. Both of the choices are correct.
d. Neither of the choices is correct.
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Students have asked these similar questions
Match the developmental genetics terms with their correct definition.
a molecule that gives cells positional information according to its concentration.
A.
Morphogen
B.
the spatial arrangement of different regions of the body.
body pattern
C.
the developmental phase during which germ layers become separated from each other.
gastrulation
D.
one of three layers of cells that produce tissues and organs in either the inside, middle, or outside of the embryo.
, germ layer
how cells rearrange to adopt the three dimensional shape of an organ or tissue.
E.
the process by which cells adopt their final physiological state.
F.
Which of the following is not true about frogs eggs and blastula formation? Choose all possible answers
a. denser yolk in the animal hemisphere.
b. Cleavage is holoblastic
c. first cleavage plane is meridional and bisects the gray crescent, revealing the existence of some factor(s) that determine(s) the initial orientation of the cleavage spindle.
d. first furrow also marks the plane of bilateral symmetry in the body
e. All four blastomeres differ in sizes.
f. All of the following are true about eggs of frogs.
Which of the following statements describing the mid-blastula transition is CORRECT?
a. Cells increase expression of E-cadherin to enhance cell stability.
b. Cell division increases to create the germ layers.
c. Zygotic genes are activated by demethylation.
d. Maternal and zygotic mRNAs provide proteins required prior to the MBT.
Chapter 52 Solutions
1 SEM ACC W/RAVEN CARDED
Ch. 52.1 - Describe the events involved in fertilization.Ch. 52.1 - Prob. 2LOCh. 52.2 - Prob. 1LOCh. 52.2 - Prob. 2LOCh. 52.2 - Prob. 3LOCh. 52.3 - Prob. 1LOCh. 52.3 - Compare gastrulation in different animals.Ch. 52.3 - Name the extraembryonic membranes in amniotes.Ch. 52.4 - Prob. 1LOCh. 52.4 - Prob. 2LO
Ch. 52.4 - Prob. 3LOCh. 52.5 - Prob. 1LOCh. 52.5 - Explain the function of the organizer.Ch. 52.5 - Distinguish between primary and secondary...Ch. 52.6 - Describe the major developmental events in the...Ch. 52.6 - Explain the role of the placenta.Ch. 52.6 - Prob. 3LOCh. 52 - Data analysis Two different genes have mutant...Ch. 52 - Prob. 1IQCh. 52 - Prob. 1UCh. 52 - Which of the following plays the greatest role in...Ch. 52 - Gastrulation is a critical event during...Ch. 52 - Gastrulation in a mammal would be most similar to...Ch. 52 - Prob. 5UCh. 52 - Of the following processes, which occurs last? a....Ch. 52 - Which of the following would qualify as a...Ch. 52 - Prob. 1ACh. 52 - In the Spemann experiment, when the dorsal lip is...Ch. 52 - Suppose that a burst of electromagnetic radiation...Ch. 52 - Prob. 4ACh. 52 - Drug or alcohol exposure during which of the...Ch. 52 - Axis formation in amniotic embryos could be...Ch. 52 - Prob. 1SCh. 52 - You look up from your studying to see your dog,...Ch. 52 - Why doesnt a woman menstruate while she is...Ch. 52 - Spemann and Mangold were able to demonstrate that...
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Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, biology and related others by exploring similar questions and additional content below.Similar questions
- Which of the following statements is FALSE? a. VegT and Veg1 induce both dorsal and ventral mesoderm. b. Veg1 and VegT induce endoderm signals. c. Beta-catenin must enter the nuclei of cells on the dorsal surface for frog development to progress normally. d. Nodal is required to induce both the Organizer and ventral mesoderm.arrow_forwardIn an embryo from a homozygous Bicoid mutant female,which class(es) of gene expression is (are) abnormal?a. Gap genesb. Pair-rule genesc. Segment-polarity genesd. Hox genesarrow_forwardWhich of the following is true about Cleavage? Choose all possible answers a. At the end of cleavage, a 32-cell zygote called morula is formed. b. The angle and timing of mitotic spindle influence the pattern of embryonic cleavage. c. Cleavage is a series of mitosis that happens after the formation of zygote. d. The yolk protein is essential in determining where cleavage can occurarrow_forward
- Why isn't the answer epiblast and hypoblast? Doesn't the entirety of the inner cell mass contribute to cells forming the embryo?arrow_forwardIn organisms such as the chick, in which the egg has extensive yolk, the eggA. shows complete cleavage.B. shows incomplete cleavage.C. forms a blastoderm but no blastocoel.D. shows even distribution of the yolk.E. fails to synthesize DNA during cleavage.arrow_forwardA. How did Spemann separate the two cells of the embryo of a salamander in 1902? B. The process of removing a nucleus is calledarrow_forward
- Which of the following situations is the result of epistasis? a A mouse has black fur, black eyes, and black skin. b A mouse has white fur, pink eyes, and pink skin. c A mouse has white fur with black spots and black eyes. d A mouse has black fur with white spots and black eyes.arrow_forwardGastrulation... A. Is a specialized form of cell division that partitions the cytoplasm of a fertilized egg B. Refers to the fusion of haploid gametes to give a diploid zygote C. Produces an embryo with either two or three distinct cell layers D. Is a developmental stage consisting of a cell layer surrounding a fluid-filled space E. None of the abovearrow_forwardWhich developmental stage is mismatched? a. second week—implantation b. third week—heart development begins c. fourth and fifth week—limb buds appear d. sixth through eighth week—all organ systems present e. None of these stages are mismatched.arrow_forward
- Cleavage... A. Is a developmental stage consisting of a cell layer surrounding a fluid-filled space B. Is a specialized form of cell division that partitions the cytoplasm of a fertilized egg C. Refers to the fusion of haploid gametes to give a diploid zygote D. Produces an embryo with either two or three distinct cell layers E. None of the abovearrow_forwardFor pattern formation to occur, the cells in the developing embryo must a. “know” their position in the embryo. b. be determined during the earliest divisions. c. differentiate as they are “born.” d. must all be reprogrammed after each cell division.arrow_forwardDuring development, cells become a. differentiated before they become determined. b. determined before they become differentiated. c. determined by the loss of genetic material. d. differentiated by the loss of genetic material.arrow_forward
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