Human Heredity Principles And Issues 11th Edition by Michael Cummings - Test Bank Instant Download - Complete Test Bank With Answers Sample Questions Are Posted Below True / False 1. The additive model for polygenic inheritance proposes that the genes controlling a trait are all on one chromosome. a. True …
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Human Heredity Principles And Issues 11th Edition by Michael Cummings – Test Bank
Instant Download – Complete Test Bank With Answers
Sample Questions Are Posted Below
| True / False |
1. The additive model for polygenic inheritance proposes that the genes controlling a trait are all on one chromosome.
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2. For threshold traits, the liability for a genetic disorder is distributed among individuals in a bell-shaped curve.
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3. Continuous phenotypic variations can be explained by Mendelian inheritance.
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4. Dizygotic twins originate from two separate fertilization events.
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5. A measured heritability of 0.7 means that 70% of the phenotypic variation observed is due to genetic differences within the population.
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6. The genes discovered to date account for only about 5-10% of the total variation in adult height.
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7. The contributions of genes and environmental factors are strictly defined during the study of complex traits.
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8. Epigenetic modifications affect the nucleotide sequence of the DNA.
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9. Phenotypic variation among individuals with the same genotype is known as genetic variance.
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10. Heritability studies cannot provide information about the number, location, or identity of genes involved in specific complex traits.
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| Multiple Choice |
11. The tall and short phenotypes in pea plants are examples of ____.
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12. One characteristic of continuous variation is that ____.
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13. During interaction between genes and environment, the phenotype ____.
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14. The heritability of a trait is the ____.
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15. A trait with a heritability value of 0.75 indicates that 75% of the phenotypic variability seen in the population is caused by ____ of the population.
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16. According to Wilhelm Stern’s method of measurement, a ten-year-old child who is able to perform the mental tasks of a ten-year-old (but not of an eleven-year old) has an IQ of ____.
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17. Twins are concordant for a trait when ____.
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18. Cleft palate is ____.
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19. Twin, adoption, and family studies show that obesity has a heritability that averages close to ____.
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20. Most evidence indicates that skin color is controlled by ____ gene pair(s).
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21. Genetic testing for complex traits ____.
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22. Mendel’s pea plants made good experimental subjects because they ____.
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23. Genomic technology allows researchers to use ____ to survey the genome to detect associations between common variations and a specific phenotype.
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24. Spina bifida is one of the most common and most complex birth defects involving the ____ system.
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25. The ____ model of genetic analysis of complex traits assumes that each gene involved has an equal effect on the phenotype.
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26. In obesity studies in mice, the binding of leptin activates the leptin receptor and initiates changes in ____ in the hypothalamus.
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27. Single nucleotide polymorphisms (SNPs) are organized into blocks called ____ and are inherited together.
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28. Darker skin color is correlated with ____.
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29. If two genes control a trait and each has a dominant and a recessive allele, there are ____ phenotypic classes in the F2 generation.
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30. The concept of ____ explains why children of parents who are at the extreme ends of a normal (bell-curve) distribution for a phenotype are usually closer to the population average for the phenotype.
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| Completion |
31. An expanded definition of intelligence that goes beyond IQ is called ____________________ and includes verbal and spatial abilities, memory, speed of perception, and reasoning.
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32. The hormone leptin is produced by ____________________ cells.
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33. The correlation coefficient for unrelated people is ____________________.
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34. Dizygotic twins are no more or less genetically similar than are other pairs of ____________________.
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35. ____________________ traits are controlled by two or more genes and significant environmental interactions
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36. Using today’s genetic technology, it is possible to select ____________________ for specific traits.
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37. Complex traits are usually quantified by ____________________ rather than by ____________________.
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38. The effect of each dominant allele of a complex trait is ____________________ and _______________.
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39. Along with a significant genetic component, ____________________ plays a significant role in the development of spina bifida.
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40. Mutations of some genes for human height result in ____________________.
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41. IQ is calculated by dividing the individual’s ____________________ age by his or her ____________________ age and multiplying the quotient by 100.
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42. For a complex trait that is observed less frequently in a given sex in a given family, the recurrence risk for this trait is ____________________ for future children of that sex.
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43. In twin studies, geneticists look for situations in which genetic and environmental influences are clearly ____________________.
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44. Skin color in humans is a(n) ____________________ trait.
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45. If only one twin has a trait, the twins are ____________________ for that trait.
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46. Scientists are researching how much influence ____________________ has on the differences in IQ among population groups often classified as different races.
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47. The genotype is fixed at the moment of ____________________ and, barring mutation, is unchanging.
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48. Animal models such as the ____________________ and ____________________ are being studied to identify single genes that control aspects of learning, memory, and spatial perception.
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49. One of the important assumptions made during the study of heritability in twins is that monozygotic twins share all their ____________________ and their ____________________.
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50. In humans, variations in skin color are due to differences in the amount, type, and distribution of the pigment ____________________.
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| Essay |
51. Define and give examples of discontinuous and continuous phenotypic variation and explain how understanding of these two concepts resulted in important advances in human genetics.
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52. Illustrate how the five basic human eye colors can be explained by a model using two genes (A and B), each of which has two alleles (A and a, B and b).
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53. Discuss Sir Francis Galton’s contribution to genetics and identify the important concept that is linked to his observations.
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54. Summarize the results of performing genome-wide searches for genes that control obesity.
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55. Describe the breeding program initiated by King Frederick William of Prussia in the early 1700s to supply tall soldiers to the Potsdam Grenadier Guard. Was it successful? Why or why not?
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Figure 5-9 |
56. Refer to the figure above to explain the threshold model of complex traits.
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57. Summarize and give examples of the relationship between heritability and correlation coefficients and explain how each is calculated.
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58. Describe the relationship between single nucleotide polymorphisms and haplotypes and explain how each is used in genome-wide association studies.
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59. Summarize the results of one of the first investigations of the genetics of skin color.
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60. Describe the approach using genomics to identify genes that contribute to the variations in cognitive ability observed in humans.
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Original price was: $30.00.$20.00Current price is: $20.00.
Original price was: $30.00.$20.00Current price is: $20.00.
Original price was: $30.00.$20.00Current price is: $20.00.
Original price was: $30.00.$20.00Current price is: $20.00.
Original price was: $30.00.$20.00Current price is: $20.00.
Original price was: $30.00.$20.00Current price is: $20.00.
