1 SEM ACC W/RAVEN CARDED
12th Edition
ISBN: 9781265486297
Author: Raven
Publisher: MCGRAW-HILL HIGHER EDUCATION
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Chapter 51, Problem 1S
Summary Introduction
To determine:
The changes that would be expected when there is mutation in the SRY gene such that a male embryo could not produce functional protein.
Introduction:
In humans, the sex determination system relies on the X and Y chromosome. The egg of female contributes X chromosome, while the sperm of the male contribute to either Y chromosome or X chromosome. These combinations will result in male (XY) or female (XX) offspring respectively. SRY (sex-determining region Y) is present on the Y chromosome of males, which is responsible for the development of male in humans.
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Identify the stem cells found in ovaries of a female embryo/fetus
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A classical experiment studying the fate determination of stem cells in the developing embryo uses the transplantation of somites from one organism to another. In such an experiment, a scientist transplanted somites 20, 21, and 22 from the right side of the neural tube from five-day-old developing quail embryos into chick embryos. The transplantation was performed in two orientations so that the order of the somites was sometimes reversed.
Use the passage to answer the question.
Observations of the developing chick embryo reveal that skeletal muscles develop from the transplanted somites even though motor neurons innervating those muscles arise from chick neural crest cells. Based on these observations, what is MOST likely true?
A.
Neural crest cells differentiate into somites.
B.
Neural crest cells fuse with developing somite cells.
C.
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D.
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Chapter 51 Solutions
1 SEM ACC W/RAVEN CARDED
Ch. 51.1 - Prob. 1LOCh. 51.1 - Prob. 2LOCh. 51.1 - Prob. 3LOCh. 51.2 - Prob. 1LOCh. 51.2 - Prob. 2LOCh. 51.3 - Prob. 1LOCh. 51.3 - Prob. 2LOCh. 51.3 - Prob. 3LOCh. 51.4 - Prob. 1LOCh. 51.4 - Explain ovulation and the female reproductive...
Ch. 51.4 - Prob. 3LOCh. 51.5 - Prob. 1LOCh. 51.5 - Describe causes of infertility.Ch. 51 - Prob. 1DACh. 51 - Why might it be adaptive for an individual to be...Ch. 51 - Prob. 2IQCh. 51 - Why do you think the brain is affected when the...Ch. 51 - You have discovered a new organism living in tide...Ch. 51 - Prob. 2UCh. 51 - Prob. 3UCh. 51 - Which of the following structures is the site of...Ch. 51 - FSH and LH are produced by the a. ovaries. b....Ch. 51 - Prob. 6UCh. 51 - Mutations that affect proteins in the acrosome...Ch. 51 - In humans, fertilization occurs in the____, and...Ch. 51 - The testicles of male mammals are suspended in the...Ch. 51 - Prob. 1ACh. 51 - Which of the following is a major difference...Ch. 51 - Prob. 3ACh. 51 - Internal and external fertilization differ in that...Ch. 51 - Prob. 1SCh. 51 - Why do you think that amphibians and many fish...Ch. 51 - How are the functions of FSH and LH similar in...Ch. 51 - Prob. 4SCh. 51 - Why are all parthenogenic parents female?
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- A classical experiment studying the fate determination of stem cells in the developing embryo uses the transplantation of somites from one organism to another. In such an experiment, a scientist transplanted somites 20, 21, and 22 from the right side of the neural tube from five-day-old developing quail embryos into chick embryos. The transplantation was performed in two orientations so that the order of the somites was sometimes reversed. Use the passage to answer the question. Suppose that somite stem cells commit to their cell fates by three days post fertilization. Which result would be MOST likely in the chick embryos receiving somites transplanted in the reverse order? A. The organs arising from quail somites develop in a normal order because local signaling molecules appropriately pattern the developing organs. B. The organs arising from quail somites develop in a normal order because transcriptional programs activated in the nucleus cannot be reversed.…arrow_forwardA classical experiment studying the fate determination of stem cells in the developing embryo uses the transplantation of somites from one organism to another. In such an experiment, a scientist transplanted somites 20, 21, and 22 from the right side of the neural tube from five-day-old developing quail embryos into chick embryos. The transplantation was performed in two orientations so that the order of the somites was sometimes reversed. Use the passage to answer the question. Central self-tolerance in the immune system arises when maturing T cells in the thymus undergo apoptosis when they bind to self-antigens. Based on this information, what would MOST likely occur as the chick immune system develops? A. T cells would recognize transplanted quail somites as foreign and rapidly divide. B. T cells would recognize transplanted quail somites as foreign and undergo apoptosis. C. T cells would recognize transplanted quail somites as self and rapidly divide.…arrow_forwardA classical experiment studying the fate determination of stem cells in the developing embryo uses the transplantation of somites from one organism to another. In such an experiment, a scientist transplanted somites 20, 21, and 22 from the right side of the neural tube from five-day-old developing quail embryos into chick embryos. The transplantation was performed in two orientations so that the order of the somites was sometimes reversed. Use the passage to answer the question. As the somite cells develop into muscles, regular depolarizations in the muscles are required for the brain to properly form circuits with developing organs. Based on this observation, which prediction is MOST likely true? A. The muscles release neurotransmitters to stimulate the innervating neurons. B. The innervating neurons release neurotransmitters to stimulate the muscles. C. The muscles release hormones to stimulate the innervating neurons. D. The innervating neurons…arrow_forward
- Carefully distinguish between the terms differentiation and determination. Which phenomenon occurs initially during development?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_forwardAfter a successful in vitro fertilisation, the fertilised egg begins to divide. Where is this egg transferred before it reaches the 8-celled stage and what is this technique called?arrow_forward
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