Biology
12th Edition
ISBN: 9780134813448
Author: Audesirk, Teresa, Gerald, Byers, Bruce E.
Publisher: Pearson,
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Textbook Question
Chapter 16, Problem 5MC
Genetic drift occurs
- a. when different
phenotypes have different reproductive success. - b. in small populations but not in large populations.
- c. when only a random subset of a population reproduces.
- d. in mammals but not in bacteria.
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A gene pool is
a. all of the genes in a single individual.
b. all of the genes in the gametes from a single individual.
c. all of the genes in a population of individuals.
d. the random mixing of genes during sexual reproduction.
Which of the following is false?
a.
The color of a fruit fly's eyes is a trait.
b.
The instructions for producing a trait are found in a gene that controls the physical expression of that trait.
c.
A gene can have different alleles that can specify different traits, such as red or brown eye color.
d.
The trait is influenced by the gene, independent of the environment.
e.
By studying the patterns of traits over generations of an organism, the genetic composition of an organism can be deduced.
Which of the following might occur in the same geographic area but actually be an example of micro-allopatry?
A. A population of moths that becomes polymorphic for mating pheromones
B. Jumping spiders in which a new mutation leads some males to do a novel mating dance to attract females
C. Chromosomal duplication in a plant that reproductively isolate it
D. Flightless aphids where a mutation leads a portion of the population to specialize on a different food plant
Chapter 16 Solutions
Biology
Ch. 16.1 - define evolution in terms of concepts from...Ch. 16.1 - define equilibrium population and describe the...Ch. 16.2 - If it were true that mutations do occur in...Ch. 16.2 - Explain how the distribution of genotypes in...Ch. 16.2 - A flu vaccination stimulates your immune system to...Ch. 16.2 - Prob. 3TCCh. 16.2 - If a population grows large again after a...Ch. 16.2 - Prob. 5TCCh. 16.2 - Evolution of a Menace The mutant alleles that...Ch. 16.2 - describe how mutation, gene flow, genetic drift,...
Ch. 16.3 - A team of phys clans treated four patients with...Ch. 16.3 - If we studied a population of bighorn sheep and...Ch. 16.3 - When selection is directional, is there any limit...Ch. 16.3 - describe why selection of phenotypes can affect...Ch. 16.3 - explain how competition and predation influence...Ch. 16.3 - Prob. 3CYLCh. 16.3 - compare and contrast directional selection,...Ch. 16.3 - Microbiologists have discovered that alleles...Ch. 16 - The alleles responsible for antibiotic resistance...Ch. 16 - Stabilizing selection on a trait tends to a. make...Ch. 16 - An adaptation is a. any trait that arises from a...Ch. 16 - Which of the following statements about mutations...Ch. 16 - Genetic drift occurs a. when different phenotypes...Ch. 16 - The ______ provides a simple mathematical model...Ch. 16 - Different versions of the same gene are called...Ch. 16 - An organisms ______ refers to the specific alleles...Ch. 16 - A random form of evolution is called ________....Ch. 16 - Competition is most Intense between members of...Ch. 16 - The evolutionary fitness of an organism is...Ch. 16 - What is a gene pool? How would you determine the...Ch. 16 - Define equilibrium population. Outline the...Ch. 16 - How does population size affect the likelihood of...Ch. 16 - If you measured the allele frequencies of a gene...Ch. 16 - People like to say that you cant prove a negative....Ch. 16 - Describe the three ways in which natural selection...Ch. 16 - What is sexual selection? How is sexual selection...Ch. 16 - In North America, the average height of adult...Ch. 16 - By the 1940s, the whooping crane population had...
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Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, biology and related others by exploring similar questions and additional content below.Similar questions
- Which of the following statements is an evolutionary advantage of sex and sexual reproduction? A. Sex and recombination results in decreased genetic variation in a population and maintains advantageous traits. B. Sex and recombination can bring beneficial alleles together when producing offspring. C. Sex and recombination results in the inheritance of all the genetic information available from both parents. D. Reproduction is less risky when gametes from two individuals must fuse.arrow_forwardDefine gene mutation Group of answer choices A. the process whereby organisms better adapted to their environment tend to survive and produce more offspring. B. the introduction of genetic material (by interbreeding) from one population of a species to another, thereby changing the composition of the gene pool of the receiving population C. variation in the relative frequency of different genotypes in a small population, owing to the chance disappearance of particular genes as individuals die or do not reproduce. D. A rare and random change in a gene that can be bad or benef icial depending on the environment .arrow_forwardA. When Dr. Linda Fedigan conducted her studies on menopause, she collected data from the following sources: a. data collected on seven primate species. b. data collected on her studies of macaques. c. all of the above d. ethnographic data from traditional societies. B. several problems that may arise when geneticists undertake studies on indigenous persons without understanding their culture. Which of the following is one of these problems? a. People had samples taken without their knowledge, during surgeries. b. Samples were later used for other studies that were not authorized. c. Samples are being used to produce cures, but no money is given back. d. All of the above are truearrow_forward
- An organism with a wild-type phenotype has a. the most common expression of a gene in a population. b. only the dominant allele for a gene. c. only the recessive allele for a gene. d. an appearance different from others in the population.arrow_forwardTwo parents, who are thought to be different species, mate and produce viable hybrid offspring. When two of these hybrids mate, their offspring are not viable. What is the BEST interpretation of this data? A. The original parents are the same species because they can breed together. B. The original parents are the same species because they can breed together and produce viable offspring. C. The original parents are not the same species because they produce hybrids that impair the species’ development or survival in its environment. D. The original parents are not the same species because they produce hybrids that can have reduced viability and fertility when they mate.arrow_forwardWhich of the following statements describes an example of genetic drift?a. Allele g for fat production increases in a small population because birds with more bodyfat have higher survivorship in a harsh winter.b. Random mutation increases the frequency of allele A in one population but not inanother.c. Allele R reaches a frequency of 1.0 because individuals with genotype rr are sterile.d. Allele m is lost when a virus kills all but a few individuals and just by chance, none ofthe survivors possess allele m.arrow_forward
- In natural populations, most genes area. polymorphic.b. monomorphic.c. recessive.d. both a and c.arrow_forwardPlease help with the following: There are a number of evolutionary hypotheses that researchers have developed to better understand the high prevalence of complex diseases like type 2 diabetes and obesity across populations today. The best explanation for this high prevalence of complex diseases is: A. Speakman's hypothesis B. Meyer’s gene hypothesis C. Thrifty gene hypothesis D. Drifty gene hypothesis E. Neel's hypothesisarrow_forwardThe Old Order Amish is a relatively small population of individuals found in the United States in Pennsylvania and Ohio. They are a very isolated population due to their strong religious beliefs and lifestyle that have continued for more than 200 years. They mostly select mates from within their own population, which has had significant effects on their gene pool.The effects on their gene pool is a result of a. non-random mating b. founder effect c. mutation d. bottleneck effectarrow_forward
- You are studying a genetically modified mouse that produces electric blue fur, which is not a fur color observed in nature. You notice that females prefer males that have the blue fur when given a choice test for mates. This result supports which of the following models of sexual selection? a. Sexual selection for indirect benefits b. Sexual selection for direct benefits c. Sexual selection for arbitrary traits d. None of the abovearrow_forwardA scientist attempts to maintain a population of pea plants in a “non-evolving state” by trying to simulate the conditions required for Hardy-Weinberg equilibrium. He places the plants in a contained area under controlled conditions (no factors limiting) and makes certain that all crosses conducted are completely random. Which conditions for Hardy-Weinberg equilibrium have NOT been met? I. no gene flow II. no net mutations III. random mating IV. no natural selection A. I and II B. II and IV C. II only D. IV onlyarrow_forwardScenario 2: A scientist is studying a population of lizards in a local pond. The lizards are normally a murky brown color and blend in with the water and banks of the pond to avoid predators. Recently the scientist has noticed lizards that are born white instead of the normal brown color. He does genetic testing on both types of lizards and determines that the brown coloring should be the only color option for that type of lizard. Select the best explanation for the albino lizards. A Brown color is recessive to white. B The DNA mutated to change the color brown to white. Someone painted the lizards white. P Type here to searcharrow_forward
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