Human Heredity: Principles and Issues (MindTap Course List)
11th Edition
ISBN: 9781305251052
Author: Michael Cummings
Publisher: Cengage Learning
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Chapter 4, Problem 27QP
Variations in
A genetic disorder characterized by falling asleep in genetics lectures is known to be 20% penetrant. All 90 students in a genetics class are homozygous for this gene. Theoretically, how many of the 90 students will fall asleep during the next lecture?
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"How to Solve Genetic Problems"
Using Letters for Alleles
For convenience, the genes of an allele pair are usually symbolized
by a letter from the alphabet. A large letter is used for the dominant trait
and a small letter for the recessive trait. When we want to describe the
genotype of an organism, we use both letters to represent the alleles
inherited from the parents.
For example, free earlobes is a dominant allele and attached earlobes
is recessive. You would use a capital "F" to indicate the dominant allele
and a small “f" to indicate the recessive allele in describing an individual.
1. Write the three genotypes for earlobe attachment as it applies to the
following individuals.
a. Heterozygous
b. Homozygous Dominant
c. Homozygous Recessive
2. When it comes to symbolizing incomplete dominance with letters, it
is best to use the letter "C" for one allele and "C'" for the other allele.
List the three possible genotypes for hair type.
a. Curly
b. Wavy
c. Straight.
Why not use a small…
Hello, I would like to check my homework answer
Genetics Problem Set
Answer each question carefully and identify any references used in APA format. Be sure to
show your work and correctly label each problem and answer. Submit your completed
assignment hen finished.
1. You and your spouse have no children. You stand to inherit a sizable fortune from
your crazy Uncle Irving if you can produce three daughters in your family of three
children. What is the probability of doing just that?
2. If you could convince Uncle Irving that simply having three children all of the same
sex (m or f) would do, then what would be the probability of your receiving the
inheritance?
3. In the quest of the family stipulated in #2, you produce a boy as your first child. Now
what is the probability of inheriting the fortune?
In all of the following problems, a capital letter will be used to denote a dominant trait, and
the lower-case of the same letter will be used for the recessive trait. Be sure to review the
shorthand method for determining polyhybrid…
Chapter 4 Solutions
Human Heredity: Principles and Issues (MindTap Course List)
Ch. 4.3 - Does a pedigree drawn from the available...Ch. 4.3 - Prob. 2EGCh. 4.7 - Did the fact that Prince Albert and Queen Victoria...Ch. 4.7 - Which members of the pedigree could have been...Ch. 4 - Pedigree analysis is a fundamental tool for...Ch. 4 - Pedigree analysis is a fundamental tool for...Ch. 4 - Pedigree analysis is a fundamental tool for...Ch. 4 - Pedigree Analysis Is a Basic Method in Human...Ch. 4 - Pedigree Analysis Is a Basic Method in Human...Ch. 4 - Pedigree Analysis Is a Basic Method in Human...
Ch. 4 - Pedigree Analysis Is a Basic Method in Human...Ch. 4 - Analysis of Autosomal Recessive and Dominant...Ch. 4 - Analysis of Autosomal Recessive and Dominant...Ch. 4 - Use the following information to respond to the...Ch. 4 - Analysis of Autosomal Recessive and Dominant...Ch. 4 - Analysis of Autosomal Recessive and Dominant...Ch. 4 - A proband female with an unidentified disease...Ch. 4 - Analysis of Autosomal Recessive and Dominant...Ch. 4 - Prob. 12QPCh. 4 - Analysis of Autosomal Recessive and Dominant...Ch. 4 - Analysis of Autosomal Recessive and Dominant...Ch. 4 - Analysis of X-Linked Dominant and Recessive Traits...Ch. 4 - Prob. 16QPCh. 4 - Analysis of X-Linked Dominant and Recessive Traits...Ch. 4 - Analysis of Autosomal Recessive and Dominant...Ch. 4 - Analysis of X-Linked Dominant and Recessive Traits...Ch. 4 - Analysis of X-Linked Dominant and Recessive Traits...Ch. 4 - Analysis of X-Linked Dominant and Recessive Traits...Ch. 4 - Analysis of X-Linked Dominant and Recessive Traits...Ch. 4 - Prob. 23QPCh. 4 - Prob. 24QPCh. 4 - Variations in Phenotype Expression Define...Ch. 4 - Prob. 26QPCh. 4 - Variations in Phenotype Expression A genetic...Ch. 4 - Variations in Phenotype Expression Explain how...
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- Genetics in Practice case studies are critical-thinking exercises that allow you to apply your new knowledge of human genetics to real-life problems. Case study Michelle was a 42-year-old woman who had declined counselling and amniocentesis at 16 weeks of pregnancy but was referred for genetic counseling after an abnormal ultrasound at 20 weeks of gestation. After the ultrasound, a number of findings suggested a possible chromosome abnormality in the fetus. The ultrasound showed swelling under the skin at the back of the fetuss neck; shortness of the femur, humerus, and ear length; and underdevelopment of the middle section of the fifth finger. Michelles physician performed an amniocentesis and referred her to the genetics program. Michelle and her husband did not want genetic counseling before receiving the results of the cytogenetic analysis. This was Michelles third pregnancy; she and her husband, Mike, had a 6-year-old daughter and a 3-year-old son. At their next session, the counselor informed the couple that the results revealed trisomy 21, explored their understanding of Down syndrome, and elicited their experiences with people with disabilities. She also reviewed the clinical concerns revealed by the ultrasound and associated anomalies (mild to severe intellectual disability, cardiac defects, and kidney problems). The options available to the couple were outlined. They were provided with a booklet written for parents making choices after the prenatal diagnosis of Down syndrome. After a week of careful deliberation with their family, friends, and clergy, they elected to terminate the pregnancy. Do you think that this couple had the right to terminate the pregnancy in light of the prenatal diagnosis? If not, under what circumstance would a couple have this right? What other options were available to the couple?arrow_forwardWhich of the following terms means many genes? polymorphism polygeny polypeptide multiple allelesarrow_forwardHow do we get the expected?arrow_forward
- Film name: In the womb: Multiples Question: 1. Explain what epigenetic theory is. 2. From the film, In the Womb: Multiples, select an example where epigenetic theory is at work. Tell what this example is and explain how it is an example of the epigenetic theory. The example must come from the film. Flim main theme & Link: 1. "In the Womb: Multiples" National Geographic Video Summary ( https://studycorgi.com/in-the-womb-multiples-national-geographic-video/#:~:text=The%20video%20shows%20the%20natural,they%20had%20a%20small%20weight. ) 2. National Geographic In The Womb Multiples ( https://www.youtube.com/watch?v=BoMQrVBxa_w ) N.B: Please expert follows those links that I give you.arrow_forward(7) In a family-based alcohol use disorder genetic study, a total of 50 families, each with a pair of siblings, were recruited. The result showed that 12 families have the 1" siblings with marijuana dependence and the 2nd siblings without the disorder, while another 11 families are opposite (i.e. the 1st siblings without the disorder but the 2nd siblings with the disorder). In contrast, 20 families have both siblings exhibiting the disorder and another 17 families have both siblings without the disorder. What kind of heritability can you calculate using this family study and what is the heritability value for alcohol use disorder? A) Narrow-sense heritability, approximately 88% B) Narrow-sense heritability, approximately 44% C) Broad-sense heritability, approximately 88% D) Broad-sense heritability, approximately 44%arrow_forwardPlease help me. Thanksarrow_forward
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