Biology: The Unity and Diversity of Life (MindTap Course List)
14th Edition
ISBN: 9781305073951
Author: Cecie Starr, Ralph Taggart, Christine Evers, Lisa Starr
Publisher: Cengage Learning
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Chapter 17, Problem 3SQ
Summary Introduction
To match: The modes of natural selection with their best description.
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Natural selection can edit the nucleotide sequence of an allele inside an individual.
a.
True
b.
False
Meaningful evolution occurs when __________.
○ a heritable trait affects survival and fitness
○ a heritable changed trait gives an organism a fitness advantage
○ a changed trait gives an organism a disadvantage
○ environmental factors change
A population of ducks had dull orange bills and an average size of 18 inches from bill to tail. Over time, some researches noticed that the average size of the ducks was still 18 inches, but that now many ducks were either much smaller or much larger and no ducks were actually 18 inches long. The researcher correctly identified that the ducks were undergoing ___A___ selection for size, The researcher also noticed that the bills were a much brighter orange in the ducks, and correctly identified ____B____ selection for bill colouration. A few years later, the researcher returned and noticed that only the male ducks now had bright orange bills and the females were less bright. The researcher hypothesized that ____C____ selection was occurring.
Question 4 options:
123
Disruptive
123
Sexual
123
Directional
1.
A
2.
B
3.
C
Chapter 17 Solutions
Biology: The Unity and Diversity of Life (MindTap Course List)
Ch. 17 - ___ is the original source of new alleles. a....Ch. 17 - Which is required for evolution to occur in a...Ch. 17 - Prob. 3SQCh. 17 - Prob. 4SQCh. 17 - The persistence of sickle-cell anemia in a...Ch. 17 - ___ tends to keep populations of a species similar...Ch. 17 - The theory of natural selection does not explain...Ch. 17 - Prob. 1DAACh. 17 - Prob. 2DAACh. 17 - Prob. 3DAA
Ch. 17 - Prob. 4DAACh. 17 - Which of the following is not part of how we...Ch. 17 - Sex in many birds is typically preceded by an...Ch. 17 - The difference between sympatric and parapatric...Ch. 17 - A fire devastates all trees in a wide swath of...Ch. 17 - Match the evolution concepts. ____ gene flow a....Ch. 17 - Change in allele frequency of a population is...Ch. 17 - Species have traditionally been characterized as...Ch. 17 - Rama the cama, a llama-camel hybrid, was born in...Ch. 17 - Two species or antelope, one from Africa, the...Ch. 17 - Prob. 4CT
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- This type of selection favors individuals with alleles at both end of the spectrum of Traitsarrow_forwardA responsible for anterior morphology in an organism is inherited as maternal effect has two allele: H (normal) and h (a recessive allele that cause small head). A female organism with normal head mates with a true-breeding male with small head. All the offspring have small heads. What should be the genotype of mother and offspring? gene. It a. Mother- Hh, and Offspring- hh b. Mother- hh and offspring Hh c. Mother-hh and offspring- hh d. Mother- hh and offspring- Hharrow_forwardA ________ trait will be observed only in individuals that are homozygous for that trait. a - codominant b - recessive c - dominantarrow_forward
- Natural selection can edit the nucleotide sequence of an allele inside an individual. Question 8 a. False b. Truearrow_forwardWhich of the following principles of selection are true for both the sickle cell and rock pocket mice examples? Check all that apply. (1 or more are correct). Group of answer choices A_The same genotype can have higher fitness in one environment, but lower fitness in another environment B-Some genotypes have higher fitness than other genotypes C-Some genotypes have lower fitness than other genotypesarrow_forwardIn the universal ABO blood grouping system, there are four phenotypes—A, B, AB, and O—which are determined by three different alleles. The presence of three alleles in the ABO blood grouping system is an example of ____. a. a polymorphism b. the bottleneck effect c. genetic drift d. a dimorphism e. the founder effectarrow_forward
- 10)arrow_forwardI had trouble with explaining how natural selection affects alllele and genotype frequency. Does natural natural selection affect alleles by causing adaption to happen increasing the frequency of advantageous alleles?arrow_forwardit is believed that the cystic fibrosis (CF) gene conferred protection to carriers during the cholera epidemics of the Middle Ages. The CF gene frequency would be expected to do what in those populations? become sex-linked recessive b. decrease c. stay the same d. increasearrow_forward
- Believed inheritance of acquired traits [ Choose ] a. Lyell b.Lamarck c.Mendel d. Wallace e. Cuvierarrow_forwardYou are examining the gene in your snail population that confers resistance to a parasite. There are multiple alleles at this locus. Identify the characteristics that would result in the greatest increase resistant allele. allele frequency (not necessarily the greatest allele frequency) in one single generation of the Answer Resistant allele acts.. Initial resistant allele frequency... Selection strength is... dominantly high weak la. b. recessively low strong dominantly low strong С. d. recessively high weak O a. Answer a. O b. Answer b. O c. Answer C. O d. Answer d.arrow_forwardMatch Column A with Column B. The ultimate source of new alleles A. Mutation this force is causing a small percentage to the evolution process B. Natural selection most are lost due to chance or to detrimental effects on C. Genetic drift phenotype D. migration |In its absence, allele frequencies in different subpopulations will diverge Source of new alleles entering local population from other subpopulations v The movement of organisms among subpopulations - v Genotypes best suited to survive and reproduce in a particular environment of the offspring | The genotypes that promote survival are favored and contribute disproportionately to the offspring of the next generation known as evolutionary adaptation | The random, undirected changes in allele frequencies, especially in small populations.arrow_forward
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Mechanisms of Genetic Change or Evolution; Author: Scientist Cindy;https://www.youtube.com/watch?v=5FE8WvGzS4Q;License: Standard Youtube License