Max Weight vs. Max Lifespan of Dog Breeds 20 Max Life Span 10 100 150 200 Max Weight Which of the following conclusions is BEST supported by the scatter plot? A Dog breeds with a higher maximum weight tend to have longer maximum lifespans B Dog breeds with a higher maximum weight tend to have shorter maximum lifespans (C) All dog breeds tend to have the same average lifespan D Older dogs weigh more than younger dogs (b) This question refers to the chart from the previous question. Which of the following conclusions is BEST supported by the scatter plot? No dog breeds that weigh more than 150 pounds are expected to live more than 10 years. B All dog breeds that weigh less than 50 pounds have a maximum lifespan of more than 10 years C) Most dog breeds have a maximum life span of 10 or fewer years D Most dogs breeds have a maximum weight of 100 lbs or more

Max Weight vs. Max Lifespan of Dog Breeds 20 Max Life Span 10 100 150 200 Max Weight Which of the following conclusions is BEST supported by the scatter plot? A Dog breeds with a higher maximum weight tend to have longer maximum lifespans B Dog breeds with a higher maximum weight tend to have shorter maximum lifespans (C) All dog breeds tend to have the same average lifespan D Older dogs weigh more than younger dogs (b) This question refers to the chart from the previous question. Which of the following conclusions is BEST supported by the scatter plot? No dog breeds that weigh more than 150 pounds are expected to live more than 10 years. B All dog breeds that weigh less than 50 pounds have a maximum lifespan of more than 10 years C) Most dog breeds have a maximum life span of 10 or fewer years D Most dogs breeds have a maximum weight of 100 lbs or more

Biology: The Dynamic Science (MindTap Course List)

4th Edition

ISBN:9781305389892

Author:Peter J. Russell, Paul E. Hertz, Beverly McMillan

Publisher:Peter J. Russell, Paul E. Hertz, Beverly McMillan

Chapter20: Development Of Evolutionary Thinking

Section: Chapter Questions

Problem 1ITD: For centuries, animal breeders have used artificial selection to increase the speed of racehorses....

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PREDICT You study males in populations of a certain species of minnows in a series of lakes at different latitudes. You find that they exhibit clinal variation in average weight at maturity and hypothesize that the weight differences are due to genetic factors. What might you predict about the average weights at maturity of representatives of each population reared in aquaria if your hypothesis is correct?
A population of mice is at HardyWeinberg equilibrium at a gene locus that controls fur color. The locus has two alleles, M and m. A genetic analysis of one population reveals that 60% of its gametes carry the M allele. What percentage of mice contains both the M and m alleles? a. 60% b. 48% c. 40% d. 36% e. 16%
Identify a possible advantage and a possible disadvantage of a genetic test that would identify genes in individuals that increase their probability of having Alzheimer’s disease later in life.
The relative numbers of different genes (alleles) in a gene pool change as a result of four processes of microevolution: _________, _________, _________, and _________.
Which of the following statements does not support the conclusion that giraffes are k-selected species? Giraffes are approximately 6' tall and weigh 150 Ibs at birth Wild giraffes begin mating at 6-7 years of age Newborn giraffes are capable of coordinated walking within an hour of birth, and running within 24 hours of birth Giraffes rarely give birth to twins.
The MN blood group is of interest to population geneticists because (a) people with genotype MN cannot receive blood transfusions from either MM or NN people (b) the MM, MN, and NN genotype frequencies can be observed directly and compared with calculated expected frequencies (c) the M allele is dominant to the N allele (d) people with the MN genotype exhibit frequency-dependent selection (e) people with the MN genotype exhibit heterozygote advantage
A forest fire is an example of regulation. density-dependent density-independent r-selected K-selected
Improving the nutritional value of food has long been one of the goals in agricultural genetics. Crossing different strains of plants and animals followed by generations of artificial selection have yielded some successes, including the development of high-protein maize. The use of gene transfer biotechnology has led to other advances, including the creation of nutritionally enhanced rice to combat vitamin A deficiency and blindness. Researchers are now turning their attention to the nutritional enhancement of animals that are used as food. Scientists are now turning their attention to using gene transfer technology to nutritionally enhance animal foods. Recently, biotechnology was used to produce a sheep with increased amounts of an omega-3 essential fatty acid that plays an important role in the development of the nervous system and, in adults, reduces the risk of coronary artery disease. Once a small number of transgenic animals have been produced, they can be bred by conventional methods to establish a source of nutritionally enhanced meat and milk. The use of biotechnology is presenting consumers with many new choices, which will become more common in the future. Increasingly, we will all have to educate ourselves about the pros and cons of such decisions. How would you explain your decision to eat nutritionally enhanced meat from animals modified by biotechnology?
Improving the nutritional value of food has long been one of the goals in agricultural genetics. Crossing different strains of plants and animals followed by generations of artificial selection have yielded some successes, including the development of high-protein maize. The use of gene transfer biotechnology has led to other advances, including the creation of nutritionally enhanced rice to combat vitamin A deficiency and blindness. Researchers are now turning their attention to the nutritional enhancement of animals that are used as food. Scientists are now turning their attention to using gene transfer technology to nutritionally enhance animal foods. Recently, biotechnology was used to produce a sheep with increased amounts of an omega-3 essential fatty acid that plays an important role in the development of the nervous system and, in adults, reduces the risk of coronary artery disease. Once a small number of transgenic animals have been produced, they can be bred by conventional methods to establish a source of nutritionally enhanced meat and milk. The use of biotechnology is presenting consumers with many new choices, which will become more common in the future. Increasingly, we will all have to educate ourselves about the pros and cons of such decisions. On the other hand, how would you explain your preference for meat from animals without higher levels of beneficial fatty acids?
Define environmental variance.
As shown in Figure 23.25, there is considerable variation in the facial features of humans. Explain this fact in terms of the concept of the gene pool. Figure 23.25 Humans show a great deal of variation in their outward appearance. (Top: Rodriguez/ Fancy/Jupiterimages; Bottom left: Owen Franken/Corbis; Bottom right: Christopher Briscoe/Photo Researchers, Inc)
How Can We Measure Allele Frequencies in Populations? The MN blood group is a single-gene, two-allele system in which each allele is codominant. Why are such codominant alleles ideal for studies of allele frequencies in a population?