Human Biology: Concepts and Current Issues (8th Edition)
8th Edition
ISBN: 9780134042435
Author: Michael D. Johnson
Publisher: PEARSON
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Chapter 19, Problem 4AWK
Geneticists often study patterns of gene transfer in a variety of model organisms, including plants, fruit flies, and even worms. If they're really interested in patterns of inheritance in humans, why don't they use humans or at least larger animals more similar to humans, such as pigs or even primates?
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Chapter 19 Solutions
Human Biology: Concepts and Current Issues (8th Edition)
Ch. 19 - If you might be a carrier of a gene for an...Ch. 19 - Prob. 2QCCh. 19 - Prob. 1CRCh. 19 - Prob. 2CRCh. 19 -
3. Distinguish between genotype and phenotype.
Ch. 19 - Describe the contributions of Mendel to the field...Ch. 19 - Explain how alterations of chromosome number and...Ch. 19 - Prob. 6CRCh. 19 - Prob. 7CRCh. 19 - Describe what is meant by sex-linked inheritance.
Ch. 19 -
9. Explain why lethal diseases caused by dominant...Ch. 19 - Prob. 10CRCh. 19 - All of the following statements about homologous...Ch. 19 - Prob. 2TYCh. 19 -
3. Which of the following statements correctly...Ch. 19 - Prob. 4TYCh. 19 - Prob. 5TYCh. 19 - Prob. 6TYCh. 19 - Prob. 7TYCh. 19 - Which of the following results in the separation...Ch. 19 - Prob. 9TYCh. 19 - Prob. 10TYCh. 19 - What tool is used to determine the probabilities...Ch. 19 - Prob. 12TYCh. 19 - What is the basis for the tremendous genetic...Ch. 19 - Prob. 14TYCh. 19 -
15. Which of the following events or processes...Ch. 19 -
1. What fraction of the offspring of two...Ch. 19 -
2. Why is it that the range of resting blood...Ch. 19 - Prob. 3AWKCh. 19 - Geneticists often study patterns of gene transfer...Ch. 19 - Prob. 5AWKCh. 19 - Prob. 6AWKCh. 19 - Nondisjunction during meiosis can lead to the...
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- Imagine that you caught a female albino mouse inyour kitchen and decided to keep it for a pet. A fewmonths later, while vacationing in Guam, you caughta male albino mouse and decided to take it home forsome interesting genetic experiments. You wonderwhether the two mice are both albino due to mutations in the same gene. What could you do to find outthe answer to this question? Assume that both mutations are recessive.arrow_forwardA study of three generations in a family of a male colleague of the authors indicated that many of the man's blood relatives had died of cardiovascular accidents and coronary heart disease. Others died of other causes but were affected by high blood pressure. What are the implications of this information for the man in question? b. What information and help might a genetic counselor provide?arrow_forwardIf our DNA contains all the information about who we are, how can something that does not involve changing the gene sequence cause changes in phenotypes? Describe briefly how these changes happen.arrow_forward
- Why have geneticists used reverse genetics to study the genes involved in vertebrate development? Explain how this strategy differs from traditional genetic analyses like those done by Mendel.arrow_forwardYou are working in the lab with strains of Drosophila that have either normal legs or abnormally short legs and you are studying the gene responsible. You know that normal legs are dominant to short legs. You come across a misplaced fly with normal legs, but you are not sure of his genetic background and you want to keep him in your experiments. (Without doing a molecular analysis), How could you figure out whether he was heterozygous or homozygous for the leg gene that you are studying? (Describe what you would do and how the results would answer the question.) What is the procedure you described above called?arrow_forwardSometimes, genetic make-ups do not show up as traits. Let us assume Jane has beautiful brown eyes. Her dad has beautiful blue eyes (pure-bred blue eyes, to say, he has only blue eye genes), while her mom has beautiful brown eyes (pure-bred brown eyes, to say, she has only brown eye genes). Then Jane must be a half brown eye and a half-blue eye, but she has only brown eyes. Why and how this could happen?arrow_forward
- DNA sequencing of your own two β-globin genes (one from each of your two Chromosome 11s) reveals a mutation in one of the genes. given this information alone, should you worry about being a carrier of an inherited disease that could be passed on to your children? What other information would you like to have to assess your risk?arrow_forwardWhat is the term for situations in which a single functional allele of a gene is unable to mask an allele that deletes the gene completely?arrow_forwardEye colors are passed down through generations, but sometimes genetic variations can lead to surprising results in eye colors (dark eye color, still rocks!?) Some examples are found below. Is there truth behind the following? Provide explanations for your answer. Two parents with blue eyes cannot have a brown-eyed child and vice-versa. Eyes with more than one color stems from parents with two different eye colors. People with violet eyes are mutants. People with red or pinkish eye color can have dark-eyed parents.arrow_forward
- Describe three different pedigree symbols and their uses. What are pedigrees used for in genetics?arrow_forwardWhen you are visiting the local pet store you start talking to them about their Ceti alpha-5 eel colony. They tell you that some eels have red antennas, some have white antennas, and some have pink antennae. Whenever you cross an eel with red antennae to an eel with white antennae you only recover eels with pink antennae. If you assume antennae color is under the control of one gene and you cross two eels with pink antennae what would you predict would be the genotypes and phenotypes of the progeny? How would you explain these results? (Describe why the expected results from ‘a’ would happen.)arrow_forwardDiscuss how genomic imprinting can be inferred from inheritance patterns in human pedigrees.arrow_forward
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