EP CONNECT ONLINE ACCESS FOR BIOLOGY:
5th Edition
ISBN: 9781260542226
Author: Hoefnagels
Publisher: MCGRAW-HILL HIGHER EDUCATION
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Chapter 12, Problem 4MCQ
Summary Introduction
Introduction:
Charles Darwin gave the idea about natural selection. This is an essential process of evolution, but there are many more forces for change in evolution. Natural selection supports the allele that causes successful reproduction and selecting that allele instead of those alleles that do not, it results in the evolution of the population.
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Which type of selection results in greater genetic variance in a population? a. stabilizing selection b. directional selection c. diversifying selection d. positive frequency-dependent selection
A. Stabilizing Selection
B. Disruptive Selection
C. Directional Selection
D. Normal Selection
26. A biologist studying wolves has collected data on the mass of meat caught per day from
hunts by packs varying in size from 2 to 15 wolves. The data show that as pack size
increases, the mass of meat available per pack member per day increases. Which additional
study would provide evidence that pack hunting provides an advantage?
A. Measure and compare the abili ty of wolves of varying ages to successfully engage in hunting.
B. Observe whether an individual wolf hunts different types of prey than a pack of wolves hunts.
C. Measure the ratio of male to female wolves engaging in hunting to see if it varies with pack size.
D. Compare the average number of pups per litter that reach reproductive age for wolf packs of
different sizes.
luminate Education TM Inc.
Assume you are studying a population of hummingbirds. You discover that the smallest hummingbirds can't keep their eggs warm and those eggs tend to fail. You also discover the largest hummingbirds tend to accidentally crush their eggs, so those eggs fail. The medium-size hummingbirds therefore have the highest fitness. What type of selection would this result in?
a.
Directional selection
b.
Sexual selection
c.
Disruptive selection
d.
Stabilizing selection
Chapter 12 Solutions
EP CONNECT ONLINE ACCESS FOR BIOLOGY:
Ch. 12.1 - What are two ways to define evolution?Ch. 12.1 - Prob. 2MCCh. 12.2 - How does the history of evolutionary thought...Ch. 12.2 - What did Darwin observe that led him to develop...Ch. 12.2 - How might artificial selection and natural...Ch. 12.2 - What is the modern evolutionary synthesis?Ch. 12.3 - Prob. 1MCCh. 12.3 - Prob. 2MCCh. 12.3 - How can natural selection favor different...Ch. 12.3 - Prob. 4MC
Ch. 12.3 - Prob. 5MCCh. 12.4 - Prob. 1MCCh. 12.4 - Prob. 2MCCh. 12.4 - Prob. 3MCCh. 12.4 - Prob. 4MCCh. 12.5 - Prob. 1MCCh. 12.5 - Prob. 2MCCh. 12.6 - Prob. 1MCCh. 12.6 - What is the difference between intrasexual...Ch. 12.7 - Prob. 1MCCh. 12.7 - South China tigers have two color patterns...Ch. 12.7 - Prob. 3MCCh. 12.7 - Prob. 4MCCh. 12.8 - What hypothesis did Conover and Munch test?Ch. 12.8 - Prob. 2MCCh. 12 - Prob. 1MCQCh. 12 - Prob. 2MCQCh. 12 - What is the most accurate way to ex plain the...Ch. 12 - Prob. 4MCQCh. 12 - Prob. 5MCQCh. 12 - List and describe five mechanisms of evolutionCh. 12 - Explain how understanding evolution is important...Ch. 12 - Write a paragraph that describes the connections...Ch. 12 - Fraggles are mythical, mouselike creatures that...Ch. 12 - Prob. 5WIOCh. 12 - Prob. 6WIOCh. 12 - Jellyfish Lake, located on the Pacific island of...Ch. 12 - Prob. 8WIOCh. 12 - Review the Survey the Land scape figu re in th e...Ch. 12 - Add the terms genotype, phenotype, allele...
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- In general, what is the effect of complete selection, migration and random genetic drift on the gene frequencies of the population? a. complete selection b. migration c. random genetic driftarrow_forwardThe main idea behind Darwin’s theory of natural selection was Group of answer choices a. Competition for space between the individuals will limit a population b. Individuals pass on acquired characteristics to their offspring c. Individuals with advantageous adaptations are more likely to out-produce those lacking that adaptation d. Populations adapt over timearrow_forwardMatch each term with the best description. 1. natural selection 2. domesticated 3. intentional breeding 4. artificial selection a. when the environment is the controlling agent b. when humans purposefully select a male and female for mating or breeding c. tamed or made appropriate for use by humans d. when humans act as the controlling agentarrow_forward
- When male lions reach sexual maturity, they leave their group in search of a new pride. This can alter the allele frequencies of the population through which of the following mechanisms? a. natural selection b. genetic drift c. gene flow d. random matingarrow_forwardJohn wants a dog with short hair. To do this, he breeds two dogs, both with short hair. This is called A. Natural Selection B. Artificial Selection C. Genetic Modification D. Random Chancearrow_forwardThe average length of rabbit ears decreases gradually with increasing latitude. This is an example of which of the following? Group of answer choices a. genetic drift b. directional selection c. disruptive selection d. stabilizing selectionarrow_forward
- What is the difference between artificial selection (e.g., greyhounds that are bred for speed) and natural selection? a. In artificial selection, the genetic variation introduced into the population is limited, but in natural selection, it is not b. In artificial selection, the environment is the selective force, while in natural selection, humans are the selective force c. In natural selection, the environment is the selective force, while in artificial selection, humans are the selective force d. Unlike other species, dogs are not subject to natural selection e. Both A & Carrow_forwardD. II and IV PDF Final Exam JPG Converted.pdf Sign in 28. The sperm count of the human population of developed societies has million per ml to 50 million per ml in recent years. This is an example of A. directional selection B. disruptive selection C. sexual selection D. stabilising selection 29. Which of the followings is TRUE about directional selection? A. Selection pressure against organisms with one of the extreme phenotypes. B. It usually occurs in response to a stable environment. C. The mean value of the population graph remains unchanged. D. Example for direction selection is the birth weights of human babies. Page 10 of 23 Cell Biology BIO30305 Dr. Ng Woei Kean 202104 FE 30. Which type of selection causes the dark-coloured moth has a natural selective advantage over the light-coloured moth during industrial melanism in the 19th century? A. Stabilising selection B. Directional selection C. Sexual selection D. Disruptive selection Page 11 / 23arrow_forwardAlleles that increase resistance to disease are expected to increase in frequency in the population as a result of? a. positive selection b. negative selection c. balancing selection d. artificial selectionarrow_forward
- Individuals in a population of sunflowers have a range of flower sizes, and the average diameter of their flowers is 5 cm. What effect would selection have on flower diameter in this population of sunflowers? A. The average flower diameter may not change if the population is under disruptive selection. B. Small flowers are favoured if the population is under disruptive selection. C. The average flower diameter will increase if the population is under stabilizing selection. D. Large flowers are favoured if the allele for flower size is dominant when the population is under directional selection.arrow_forwardExplain the mechanisms that produce change in populations from generation to generation. 1. artificial selection 2.natural selection 3.genetic driftarrow_forwardWhich of the four evolutionary mechanisms make a population better adapted to its environment? A. Migration B. Genetic drift C. Mutations D. Natural selection. arrow_forward
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