Biology
12th Edition
ISBN: 9780134813448
Author: Audesirk, Teresa, Gerald, Byers, Bruce E.
Publisher: Pearson,
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Textbook Question
Chapter 16, Problem 6FIB
The evolutionary fitness of an organism is measured by its success at ________. The fitness of an organism can change if its _________ changes.
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In a plant, the height of flower stalks is controlled by one gene. Flower stalks can be tall, medium, or short. Plants that produce tall flower stalks have the most offspring. This violates the assumption that _____________________ because an evolutionary mechanism , _____________________, is operating the population. ( name the relevant Hardy-Weinberg assumption and the evolutionary mechanism)
True or false: Natural selection, in general, references variation in survival and reproductive success in individuals
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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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- A difference in survival and reproduction among members of a population that vary in one or more traits is called ________.arrow_forwardThe process in which populations accumulate adaptations over time to become more suited to their environments is called ____________ . It is considered the unifying concept of ____________ , which is the study of life.arrow_forward_____________ is the evolutionary process by which populations evolve to become distinct species. Reproductive isolation, the end of ___________ between populations, is always part of the process by which sexually reproducing species achieve and maintain separate identities.arrow_forward
- Which of the following would be the best measure of an organism’s evolutionary fitness? Lifespan Number of offspring Number of siblings Physical strengtharrow_forwardThe theory of kin selection (inclusive fitness) takes into account that an organism can pass on copies of its genes through the reproduction of close relatives. True or Falsearrow_forwardWhich of the following is the degree of an organism’s adaptation to an environment, as measured by an individual’s relative genetic contribution to future generations? Fitness Lineage Adaptationarrow_forward
- Reproduction traits like fertility are governed by ____ therefore it is best to use_____ mating system to effect genetic improvement in the populationarrow_forwardProducing fewer eggs than the Lack number can be explained by (select all that are correct) Question 4 options: Egg production is never lower than the Lack number Trying to avoid attracting a predator Gene flow Yearly variation in the environment Producing larger eggsarrow_forwardTRUE OR FALSE:"Genetic divergence is the process whereby populations of a species accumulate differences in their gene pool due to lack of gene flow between them".arrow_forward
- Dog breeds are an example of artificial selection, which means ______ selected for certain traits in dogs fill the balnkarrow_forwardA new phenotype arises due to a mistake that occurs during DNA replication in a germ line cell (which makes eggs/sperm) This violates the assumption of _______________because an evolutionary mechanism, ________________,is operating the population. (name the relevant Hardy-Weinberg assumptionand the evolutionary mechanism)arrow_forwardThe Tibetans and Han Chinese share several genetic traits and DNA. However the EPAS1 gene which increases the ability of red blood cells carry oxygen even in low environments, is only commonly found in the Tibetan population that live in higher elevations. Explain why this gene is commonly in Tibetan populations from the perspective of competitive advantage and natural selection. Write your answer in 3-5 sentencesarrow_forward
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