Biology: The Unity and Diversity of Life (MindTap Course List)
14th Edition
ISBN: 9781305073951
Author: Cecie Starr, Ralph Taggart, Christine Evers, Lisa Starr
Publisher: Cengage Learning
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Chapter 42, Problem 3SQ
Summary Introduction
Concept introduction: The process where the zygote undergoes several changes to form a youngling is known as development. During the development, the regulated gene expression takes place. As a result, the morphogens are produced that regulate how the organism should develop into a youngling.
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Homeotic gene expression _______. a. occurs via bacterial operons b. maps out the overall body plan in embryos c. triggers formation of a specific body part
Cells at the 4 cell stage of an embryo are _______ compared to cells at the 32 cell stage of the same embryo?
Group of answer choices
A. larger
B. smaller and more differentiated
C. about the same size
D. smaller
E. smaller and less differentiated
Stargardt's disease was one of these that can be treated using embryonic stem cells. Why would scientist chose to use this type of stem cell in treatment of Stargard's?
A. There ae not ethical issue concerning their use
B. They retain stem cell properties even after specialization
C. They are able to differentiate into the required cell type
D. They are already specialized for this funtion
Chapter 42 Solutions
Biology: The Unity and Diversity of Life (MindTap Course List)
Ch. 42 - The end product of cleavage is a __________. a....Ch. 42 - The outermost germ layer in a vertebrate gastrula...Ch. 42 - Prob. 3SQCh. 42 - Match each term with the most suitable...Ch. 42 - In humans, fertilization typically occurs in the...Ch. 42 - The ________, a fluid-filled sac, surrounds and...Ch. 42 - Prob. 1DAACh. 42 - Prob. 2DAACh. 42 - Prob. 3DAACh. 42 - Birth Defects and Multiple Births A woman who...
Ch. 42 - The placenta consists of __________. a. embryonic...Ch. 42 - During the fetal period, ____________. a....Ch. 42 - Prob. 9SQCh. 42 - Match each hormone with its action(s). ______...Ch. 42 - Prob. 11SQCh. 42 - Prob. 12SQCh. 42 - Prob. 13SQCh. 42 - Prob. 14SQCh. 42 - Prob. 15SQCh. 42 - The rubella virus causes German measles. If a...Ch. 42 - Prob. 2CTCh. 42 - Prob. 3CT
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- _____ is the transmission of DNA to offspring. a. Differentiation b. Inheritance c. Reproduction d. Homeostasis e. Developmentarrow_forwarda. The ovaries produce secondary the female sex cells. b. Stem cells, called divide by to produce primary each form part of a c. At the onset of puberty, tens of thousands of ovaries. Between menarche and menopause, each primordial follicle develops into a in the and its primary oocyte completes d. Some primary oocytes become 23-chromosome cells that begin then pause. secondary oocyte is released into is completed when e. Each month, the uterine tube. the oocyte isarrow_forward________is an example of reproductive cloning. a. Somatic cell nuclear transfer (SCNT) b. Multiple offspring from the same pregnancy c. Artificial embryo splitting d. In vitro fertilizationarrow_forward
- Embryonic stem cells have the potential to do all of the following except _____. a be rejected by a recipient's immune system b differentiate into almost any type of cell in the body c only able to grow into a similar type of cell d repair cells damaged by injury or diseasearrow_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_forwardMuscle cells differ from bone cells because they_______ . a. carry different genes c. are eukaryotic b. express different genes d. are different agesarrow_forward
- Cancer causing genes are called ________. a. transformation genes b. tumor suppressor genes c. oncogenes d. mutated genesarrow_forwardWhy are dominant mutations in proto-oncogenes generally not inherited? A. Inherited mutations in proto-oncogenes would not affect cell division rate B. Inherited mutations in proto-oncogenes would decrease cell division rate and no viable embryo would form C. Inherited mutations in proto-oncogenes would increase cell division rate and no viable embryo would form D. Dominant mutations in proto-oncogenes are always inheritedarrow_forwardAn individual can inherit a gene in which expression has been altered by an ________ change with no mutation of the gene sequence. Choose the description in column 2 that best matches each gene in column 1. p53 c-myc A. tumor suppressor gene B. oncogenearrow_forward
- 1. After receiving the SR signal, stem cells in the developing organism will have an increased potential to specialize. The __ genes, when expressed, enable these embryonic stem cells the capacity to differentiate. A. SR B. Skin Diff C. ID D. Neural Diff E. DIV F. DET Please answer in short and ASAP .arrow_forwardWhy isn't the answer epiblast and hypoblast? Doesn't the entirety of the inner cell mass contribute to cells forming the embryo?arrow_forward6)Identical twins occur when cells are separated from each other in the days immediately following fertilization. These cell are described as ________________. Select one: a. Pluripotent b. Totipotent c. Multipotent d. Unipotent e. Specializedarrow_forward
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