Concepts of Genetics (12th Edition)
12th Edition
ISBN: 9780134604718
Author: William S. Klug, Michael R. Cummings, Charlotte A. Spencer, Michael A. Palladino, Darrell Killian
Publisher: PEARSON
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Textbook Question
Chapter 8, Problem 2PDQ
Review the Chapter Concepts list on page 171. These all center around chromosomal aberrations that create variations from the “normal” diploid genome. Write a short essay that discusses five altered
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Chapter 8 Solutions
Concepts of Genetics (12th Edition)
Ch. 8 - A human female with Turner syndrome (47, X) also...Ch. 8 - When two plants belonging to the same genus but...Ch. 8 - What is the effect of a rare double crossover (a)...Ch. 8 - Controlling the overgrowth of invasive aquatic...Ch. 8 - Controlling the overgrowth of invasive aquatic...Ch. 8 - Controlling the overgrowth of invasive aquatic...Ch. 8 - HOW DO WE KNOW? In this chapter, we have focused...Ch. 8 - Review the Chapter Concepts list on page 171....Ch. 8 - Define these pairs of terms, and distinguish...Ch. 8 - For a species with a diploid number of 18,...
Ch. 8 - What evidence suggests that Down syndrome is more...Ch. 8 - What evidence indicates that humans with aneuploid...Ch. 8 - Contrast the fertility of an allotetraploid with...Ch. 8 - Describe the origin of cultivated American cotton.Ch. 8 - Predict how the synaptic configurations of...Ch. 8 - Inversions are said to suppress crossing over. Is...Ch. 8 - Contrast the genetic composition of gametes...Ch. 8 - Human adult hemoglobin is a tetramer containing...Ch. 8 - Discuss Ohnos hypothesis on the role of gene...Ch. 8 - What roles have inversions and translocations...Ch. 8 - The primrose, Primula kewensis, has 36 chromosomes...Ch. 8 - Certain varieties of chrysanthemums contain 18,...Ch. 8 - Drosophila may be monosomic for chromosome 4, yet...Ch. 8 - Mendelian ratios are modified in crosses involving...Ch. 8 - Having correctly established the F2 ratio in...Ch. 8 - The mutations called bobbed in Drosophila result...Ch. 8 - The outcome of a single crossover between...Ch. 8 - A couple planning their family are aware that...Ch. 8 - In a cross in Drosophila, a female heterozygous...Ch. 8 - A woman who sought genetic counseling is found to...Ch. 8 - Prob. 25ESPCh. 8 - In a recent cytogenetic study on 1021 cases of...Ch. 8 - A boy with Klinefelter syndrome (47,XXY) is born...Ch. 8 - Prob. 28ESPCh. 8 - A 3-year-old child exhibited some early indication...Ch. 8 - A normal female is discovered with 45 chromosomes,...
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- Describe the chromosomal alterations and phenotype of cri du chat syndrome and Prader-Willi syndrome.arrow_forwardTheodor Boveri predicted that malignancies would often be associated with chromosomal mutation. What lines of evidence substantiate this prediction?arrow_forwardExplore chromosomal defects among humans in Ensembl at https://www.ensembl.org/index.html?redirect=no(Links to an external site.) Take a screenshot of one of your findings and describe the type of aberration and its associated phenotype. Identify the locus of gene variant(s) responsible for the disorder. Screenshot Name of chromosomal defect Type of aberration and locus of gene variant(s) Phenotype References:arrow_forward
- Note: Don't copy from internet, Also answer correctly in terms of diploid, hemizygous, and carrier!! Thanks Explain why genetic disorders caused by recessive alleles of X-linked genes appear more frequently in males than in females? In your explanation, please include explanations of the following terms: diploid, hemizygous, carrier.arrow_forwardImagine that individual V-8 marries a female cousin who is a carrier of the 5αRD mutation. What is the probability that they will have a child who has the disorder? answer should be a fraction.arrow_forwardwhich genetic disorder matches below descriptions. extra 21st chromosome attaches to chromosome 14. Affected individual exhibit epichanthic folds of eyelids, simian crease in palms, and mental retardation. trisomy 18 Affected individuas have an elongated skull, hair lip, cleft palate, rocker-bottom feet. Life expectancy is about 10 weeks. trisomy 21. Affected indiviudals exhibit epicanthic folds of eyelids, protruding tongue, small, low set ears, and retardation.arrow_forward
- Duchenne muscular dystrophy is an X-linked, recessive disorder in which muscles waste away early in life, resulting in death in the teens or twenties. A man and woman in their late thirties have five children—three boys (ages 1, 3, and 10 years) and two girls (ages 5 and 7 years). The oldest, boy shows symptoms of the disease. What are the probabilities that their other children will develop the disease? Give only typing answer with explanation and conclusionarrow_forwardAnhidrotic ectodermal dysplasia is an X-linked recessive disorder in humans characterized by small teeth, no sweat glands, and sparse body hair. This trait is usually seen in men, but women who are heterozygous carriers of the trait often have irregular patches of skin with few or no sweat glands (see the illustration below). Q. Why does the distribution of the patches of skin lacking sweat glands differ among the females depicted in the illustration, even between the identical twins?arrow_forwardA young lady requested pre-marital genetic counselling because her sister had died in infancy of gangliosidosis, an autosomal recessive disease. What is the risk that this young lady has similarly affected offspring? What advice should be given?arrow_forward
- What is FISH? Briefly describe how it works How is FISH used to characterize chromosomal translocations associated with certain genetic disorders and specific types of cancers?arrow_forwardDETERMINE THE SYNDROME a. Formed when a normal egg is fertilized by a sperm carrying both sex chromosome b. Formed when an abnormal egg without sex chromosome is fertilized by a normal X-carrying sperm cell b. Formed when a normal X-carrying sperm cell fertilized an abnormal egg carrying with 2 sex chromosome b. when an abnormal egg without sex chromosome is fertilized by a normal Y-carrying sperm cellarrow_forwardAnswer the following questions given the pedigree below. Please assume that no other mutations are occurring, complete penetrance, and that the individual marked with an asterisk (*) doesn’t carry the allele causing the affected phenotype. Q4) Assuming II-2 and II-3 want to have another child. what are all the possible genotypes, and what is the percentage that their child will be affected?arrow_forward
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