Human Heredity: Principles and Issues (MindTap Course List)
11th Edition
ISBN: 9781305251052
Author: Michael Cummings
Publisher: Cengage Learning
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Textbook Question
Chapter 1.3, Problem 2EG
Why do unrelated children with a disorder such as Down syndrome resemble each other more closely than they do their siblings?
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Are all forms of Down syndrome due to non-disjunction?YES or NO?
Why do unrelated children with a disorder such as Down syndrome resemble each other more closely than they do their siblings?
What is Down syndrome ? When does Down syndrome occur ?
Chapter 1 Solutions
Human Heredity: Principles and Issues (MindTap Course List)
Ch. 1.3 - Ancient societies used knowledge that traits are...Ch. 1.3 - Why do unrelated children with a disorder such as...Ch. 1 - Mary and Marcie. identical twins, go to the same...Ch. 1 - Summarize Mendels conclusions about traits and how...Ch. 1 - What is population genetics?Ch. 1 - What is hereditarianism, and what is the invalid...Ch. 1 - What impact has recombinant DNA technology had on...Ch. 1 - Prob. 5QPCh. 1 - Prob. 6QPCh. 1 - In what way has biotechnology had an impact on...
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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
- Plssssssss helppppp, What are the symptoms of Down syndrome and what is the long term prognosis is for the person who has this disorder?arrow_forwardWhat is genetic disorders? Explain by giving an example.arrow_forwardWhat are the odds of the person with sickle cell anemia disorder passing it on to their children if the other person is homozygous dominant, heterozygous, or homozygous recessive for the trait?arrow_forward
- For a recessive condition, two normal heterozygous individuals have children. What is the likelihood of their children being affected by this condition? What is the likelihood of their children being carriers without the condition? What is the likelihood of their asymptomatic children being carriers? Suppose that an individual with the condition has children with a heterozygous individual, what is the likelihood of their children being carriers?arrow_forwardEpilepsy is a central nervous system (neurological) disorder in which brain activity becomes abnormal, causing seizures or periods of unusual behavior, sensations and sometimes loss of awareness. For epilepsy, the concordance values are 72% for monozygotic twins and 15% for dizygotic twins. 1) Is this a single gene inheritance or multifactorial disease? 2) Is there a strong genetic or environmental cause to the development of this disease? If both genetic and environmental causes are implicated, you have to indicate each of them separately.arrow_forwardOne form of the bleeding disorder known as von Willebrand disease is an autosomal recessive disease. A man who is a carrier marries a woman who is also a carrier of the disease. (a) What percentage of their children are likely to have a disease phenotype? (b) What percentage of their children are likely to have a normal phenotype? (c) What percentage of their children are likely to be carriers of the disease?arrow_forward
- What are affects when Nondisjunction occurs?arrow_forward1)One girl in every two has brown hair. One girl in every three has dimples. What is the probability of meeting a dimpled brown-haired girl?a)What is the chance of getting an A gamete from an AA parent?b)What is the chance of getting an a gamete from an aa parent?c)What is the chance of getting an A gamete from an Aa parentarrow_forwardwhat is the probability that a couple (both heterozygous for the same recessive mutation) will have two children with the disease if the couple plans to have four children in total?arrow_forward
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