Genetics: From Genes to Genomes, 5th edition
5th Edition
ISBN: 9780073525310
Author: Leland H. Hartwell, Michael L. Goldberg, Janice A. Fischer, Leroy Hood, Charles F. Aquadro
Publisher: McGraw-Hill Education
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Chapter 4, Problem 24P
Women sometimes develop benign tumors called ovarian teratomas or dermoid cysts in their ovaries. Such a tumor begins when a primary oocyte escapes from its prophase I arrest and finishes meiosis I within the ovary. (Normally meiosis I does not finish until the primary oocyte is expelled from the ovary upon ovulation.) The secondary oocyte then develops as if it were an embryo. Development is disorganized, however, and results in a tumor containing differentiated diploid tissues, including teeth, hair, bone, muscle, and nerve. If a dermoid cyst forms in a woman whose genotype is Aa, what are the possible genotypes of the cyst, assuming no recombination?
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Chapter 4 Solutions
Genetics: From Genes to Genomes, 5th edition
Ch. 4 - Choose the best matching phrase in the right...Ch. 4 - Humans have 46 chromosomes in each somatic cell....Ch. 4 - The figure that follows shows the metaphase...Ch. 4 - XX males who are sex-reversed because they have a...Ch. 4 - Researchers discovered recently that the sole...Ch. 4 - One oak tree cell with 14 chromosomes undergoes...Ch. 4 - Indicate which of the cells numbered iv matches...Ch. 4 - a. What are the four major stages of the cell...Ch. 4 - Answer the questions that follow for each stage of...Ch. 4 - Does any reason exist that would prevent mitosis...
Ch. 4 - One oak tree cell with 14 chromosomes undergoes...Ch. 4 - Which types of cell division mitosis, meiosis I,...Ch. 4 - Complete the following statements using as many of...Ch. 4 - The five cells shown in figure a e on the next...Ch. 4 - One of the first microscopic observations of...Ch. 4 - A person is simultaneously heterozygous for two...Ch. 4 - Assuming i that the two chromosomes in homologous...Ch. 4 - In the moss Polytrichum commune, the haploid...Ch. 4 - Does any reason exist that would prevent meiosis...Ch. 4 - Sister chromatids are held together through...Ch. 4 - The pseudoautosomal regions PARs of the X and Y...Ch. 4 - Somatic cells of chimpanzees contain 48...Ch. 4 - In humans: a. How many sperm develop from 100...Ch. 4 - Women sometimes develop benign tumors called...Ch. 4 - In a certain strain of turkeys, unfertilized eggs...Ch. 4 - Imagine you have two pure-breeding lines of...Ch. 4 - A system of sex determination known as...Ch. 4 - In Drosophila, the autosomal recessive brown eye...Ch. 4 - Barred feather pattern is a Z-linked dominant...Ch. 4 - When Calvin Bridges observed a large number of...Ch. 4 - In a vial of Drosophila, a research student...Ch. 4 - In 1919, Calvin Bridges began studying an X-linked...Ch. 4 - In Drosophila, a cross was made between a...Ch. 4 - As we learned in this chapter, the white mutation...Ch. 4 - The following is a pedigree of a family in which a...Ch. 4 - Each of the four pedigrees that follow represents...Ch. 4 - The pedigree that follows indicates the occurrence...Ch. 4 - Duchenne muscular dystrophy DMD is caused by a...Ch. 4 - The X-linked gene responsible for DMD encodes a...Ch. 4 - Males have hemophilia when they are hemizygous for...Ch. 4 - Consider the following pedigrees from human...Ch. 4 - Several different antigens can be detected in...Ch. 4 - The ancestry of a white female tiger bred in a...Ch. 4 - The pedigree at the bottom of the page shows the...Ch. 4 - In 1995, doctors reported a Chinese family in...Ch. 4 - In cats, the dominant 0 allele of the X-linked...Ch. 4 - In marsupials like the opposum or kangaroo, X...Ch. 4 - The pedigree diagram below shows a family in which...
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- Women sometimes develop benign tumors calledovarian teratomas or dermoid cysts in their ovaries.Such a tumor begins when a primary oocyte escapesfrom its prophase I arrest and finishes meiosis Iwithin the ovary. (Normally meiosis I does not finish until the primary oocyte is expelled from theovary upon ovulation.) The secondary oocyte thendevelops as if it were an embryo. Development isdisorganized, however, and results in a tumorcontaining differentiated diploid tissues, includingteeth, hair, bone, muscle, and nerve. If a dermoidcyst forms in a woman whose genotype is Aa, whatare the possible genotypes of the cyst, assuming norecombination?arrow_forwardDescribe one function, brought about by the process of meiosis thatspermatogenesis and oogenesis have in common. Please write the similarities between spermatogenesis and oogenesis in a paragraph ratherthan a table. Please discuss the process mentioning differentiation, multiplication anddivision. How many stages of meiosis do they go through. Please mention if haploid ordiploid cells are formed.arrow_forwardIdentify the stages of meiosis described by the following meiotic events/conditions/terms. Write prophase I, metaphase I, anaphase I, telophase I, prophase II, metaphase II, anaphase II, or telophase II. In case the events are found in both stages, write the stages both. 1. Formation of chiasma 2. Each chromatid is considered as full-fledged chromosome. 3. Chromosomes begin to pair off. 4. Spindle microtubules start to attach to the centromere. 5. Tetrads are aligned at the middle of the cell. 6. The sister chromatids separate. 7. Produce 2 haploid daughter cells. 8. The chromosomes line up at the middle of the cell. 9. The sister chromatids move together to the opposite poles. 10. The chromatids reach the poles. 11. The chromosomes in each daughter cell are still duplicated.12. Spindle microtubules attach in the centromere of each haploid daughter cell. 13.arrow_forward
- Choose the best matching phrase in the right columnfor each of the terms in the left column.a. meiosis 1. X and Yb. gametes 2. chromosomes that do not differbetween the sexesc. karyotype 3. one of the two identical halvesof a replicated chromosomed. mitosis 4. microtubule organizing centersat the spindle polese. interphase 5. cells in the testes that undergomeiosisf. syncytium 6. division of the cytoplasmg. synapsis 7. haploid germ cells that uniteat fertilizationh. sex chromosomes 8. an animal cell containing morethan one nucleusi. cytokinesis 9. pairing of homologouschromosomesj. anaphase 10. one diploid cell gives rise to twodiploid cellsk. chromatid 11. the array of chromosomes in agiven celll. autosomes 12. the part of the cell cycle duringwhich the chromosomes are notvisiblem. centromere 13. one diploid cell gives rise to fourhaploid cellsn. centrosomes 14. cell produced by meiosis thatdoes not become a gameteo. polar body 15. the time during mitosis whensister chromatids…arrow_forwardDown's syndrome occurs when either the sperm or the ovum has too many chromosomes. This usually occurs as a result of chromosomes not separating properly in meiosis. Draw what the four reproductive cells would look like if the chromosomes failed to separate in meiosis II. How many of the reproductive cells would be normal?arrow_forwardFill in the cells below showing the process of meiosis of the male's sex chromosomes with non- disjunction occurring during meiosis I. DO NOT show crossing over. Prior to meiosis 44 +XY What are the possible abnormal gametes the male can produce with non-disjunction occuring in Meiosis I? Identify the possible sexual aneuploidy syndrome if these abnormal sperm cells are fertilized by a normal egg cell. Could this man father a Tuner syndrome (XO) child? Could this man father a Klinefelter's syndrome child (XXY)?arrow_forward
- During meiotic divisions to make sperm, the cellular divisions at the end of meiosis I and II is unequal resulting in one gamete. True Falsearrow_forwardDuring this phase of meiosis, the nuclear membrane reappears and there is a brief resting period before the next division. Telophase I Interphase Telophase II Anaphase Iarrow_forwardMeiosis involves two phases, meiosis I and meiosis II. This type of cell division occurs during the formation of both sperm and ovum. The first meiotic division of the primary spermatocyte results in two secondary spermatocytes. .What is the result of the first meiotic division of the primary oocyte? two secondary oocytes two polar bodies O two ovum one secondary oocyte and one polar bodyarrow_forward
- Fill in the cells below showing the process of meiosis of the male's sex chromosomes with non- disjunction occuring during meiosis II. DO NOT show crossing over. Prior to meiosis 44 +XY What are the possible abnormal gametes the male can produce with non-disjunction occurring in Meiosis II? Identify the possible sexual aneuploidy syndrome if these abnormal sperm cells are fertilized by a normal egg cell. Could this man father a Tuner syndrome (XO) child? Could this man father a Klinefelter's syndrome child (XXY)?arrow_forwardDescribe the final cellular products produced when a primary oocyte undergoes meiosis (I and II) in human females. four haploid oocytes 1 diploid oocyte and 3 polar bodies 1 haploid oocyte and 2 polar bodies two genetically identical daughter cells four genetically identical daughter cellsarrow_forwarda. What phase of meiosis is this cell undergoing? b. Identify the 3 things that are incorrect in terms of this cells structure and organization? c. Would this cell produce viable gametes? Why or why not.arrow_forward
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