Human Heredity: Principles and Issues (MindTap Course List)
11th Edition
ISBN: 9781305251052
Author: Michael Cummings
Publisher: Cengage Learning
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Chapter 1.3, Problem 1EG
Ancient societies used knowledge that traits are heritable in domesticating animals and developing agricultural crops. What might account for the failure to recognize that the same processes operate in humans?
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Students have asked these similar questions
Which of the following is an example of how genotype and environmental factors
can work together to determine phenotype?
O a) Temperature-senitive mutations
O b) Nutritional factors resulting in epigenetic modification of genes
c) Sex-influenced inheritance
O d) Both A and B
O e) Both A and C
Most sheep have the ability to grow coats of wool that vary in their thickness depending on the
ambient temperatures that they experience. This is an aspect of phenotypic plasticity, variability in
the phenotype that can be triggered by the experiences of the organism. When referring to a
sheep that has grown more wool in a cold climate than its parents living in a warm one, what term
best describes this? (NOTE: look back at chapter 25, if you are having trouble remembering)
O Adaptation
Intersexual selection
Intrasexual selection
Acclimitization
Gene Fixation
Albinism occupied a special place in the Hopi culture; individuals who possessed this trait were valued by members of the tribe. What are some examples of genetic traits that, in contrast, sometimes result in discrimination and prejudice?
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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- One of the models for behavioral traits in humans involves a form of gene interaction known as epistasis. What is epistasis?arrow_forward"In cattle, the allele that causes horns to grow is recessive. Another recessive allele causes the cows to grow abnormally large and muscular. These muscular cows are often called Belgian blue cows. If a cow that is heterozygous for both the horn and Belgian blue trait genes passes on the allele for growing horns to an offspring, what are the odds that the parent cow also passes on the allele for becoming very muscular to that offspring?" I know the answer is 50% but how do I get to this answer?arrow_forwardIN TRANSYLVANIA, SOME PEOPLE EXHIBIT TWO UNUSUAL TRAITS IN WHICH THEY HAVE VERY LONG FRONT TEETH AND THE INABILITY TO BE AWAKE WHEN THE SUN IS UP. BOTH OF THESE TRAITS APPEAR TO BE RECESSIVE. IF A WOMAN WHO IS HETEROZYGOUS FOR TEETH AND HOMOZYGOUS NORMAL FOR BEING IN THE SUN MARRIES A MAN WHO HAS BOTH THESE TRAITS, WHAT COULD BE THE PHENOTYPES AND GENOTYPES OF THEIR CHILDREN? USE A PUNNET SQUARE AND SHOW ALL WORK. LIST THE RATIOS FOR THE GENOTYPES AND PHENOTYPES.arrow_forward
- .A) To determine if a human trait is heritable, we would best study Group of answer choices. I think it's A. Please explain your answer I'm trying to understand the material a. monozygotic twins that were raised separately, in different environments. b. monozygotic twins that have been raised under similar conditions. c.only distantly related individuals. d. all males or all females. B). To say that a trait exhibits “high heritability” is to say that a. a given set of genes has no influence on a trait. b. there is no difference in genotype between members of the population at the loci in question. c. in a given environment and population, genetic differences have a high degree of influence on the trait compared to environmental influences. d. there is no difference in character between two individuals with the same genotype in question. C). If two populations with identical genetic makeup are raised in different environments, the narrow-sense heritability of a trait of…arrow_forwardAlbinism in humans can be caused by mutations in any one of several different genes. This situation, in which the same phenotype may result from variation in several different genes, is referred to as genetic heterogeneity. Is genetic heterogeneity common? Are most genetic traits in humans the result of variation in a single gene, or are there many genetic traits that result from variation in several genes, as albinism does?arrow_forwardAccording to Amar J. S. Klar, is there a such thing as “left handedness”? What is the preferred term? Describe how the genetics works, according to his hypothesis. What are the alleles, and which combinations of alleles make for which type of hand use?arrow_forward
- what is the relationship between genes and traits expressed in individuals? a) gene code for DNA, which is primarily responsible for individual traits b) Gene code for proteins, which are primarily responsible for individual traits c) genes code for chromosomes, which are primarily responsible for individual traits d) gene codes for carbohydrates, which are primarily responsible for individual traitsarrow_forwardEpigenetics addresses a) the mechanism by which the environment alters a person’s genotype. b) the mechanism by which gene can code for more than one protein. c) the mechanisms that can alter gene expression. d) heritability patterns based on dominant and recessive alleles.arrow_forwardIn an epic battle, the Green Goblin was able to wound Spider-Man and collect a sample of his cells. Utilizing a HuMouse model organism, the Goblin got the mutated chromosomes into the animals and began breeding them to determine the basis of their chromosomal inheritance. In the process of conducting his research, he discovered the gene associated with spider-like powers are actually three distinct genes: one for spider sense; one for super strength; one for enhanced agility. All genes appear to be dominant, so the Goblin runs a test cross and gets the following results: Phenotype Agility Number of Progeny 94 Agility and Sense 3 All 3 Powers 580 Sense 40 Strength and Agility Strength and Sense Strength 45 89 5 No Powers 592 What is the map distance between Strength and Agility genes? (Enter your number as map units, or centiMorgans, but without units)arrow_forward
- The agouti gene determines coat colour in mice. Heterozygous mice have yellow coats, while homozygous dominant mice have black coats. However, having two copies of the recessive alleles is lethal. In a population of 2 000 mice, 1 082 mice have black coats. a) Calculate the frequency of each allele. Show all your work and express your answer as a value between 0 and 1 rounded to two decimal places. b) What percentage of the mouse population is expected to be carriers of the lethal allele? Show all your work and express your answer rounded to one decimal place. c) How many mice will die during fetal development? Show all your work and round your answer to the closest whole number.arrow_forwardWrite a short explanatory essay on the following statement: “Incases of genetically programmed phenotypic plasticity, naturalselection acts on the norm of reaction. Thus the norm of reactionas a whole—rather than any one phenotype—determines ifselection is positive or negative.”arrow_forwardA curious polymorphism in human populations has to do with the ability to curl up the sides of the tongue to make a trough (“tongue rolling”). Some people can do this trick, and others simply cannot. Hence, it is an example of a dimorphism. Its significance is a complete mystery. In one family, a boy was unable to roll his tongue but, to his great chagrin, his sister could. Furthermore, both his parents were rollers, and so were both grandfathers, one paternal uncle, and one paternal aunt. One paternal aunt, one paternal uncle, and one maternal uncle could not roll their tongues.a. Draw the pedigree for this family, defining your symbols clearly, and deduce the genotypes of as many individual members as possible.b. The pedigree that you drew is typical of the inheritance of tongue rolling and led geneticists to come up with the inheritance mechanism that no doubt you came up with. However, in a study of 33 pairs of identical twins, both members of 18 pairs could roll, neither member…arrow_forward
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