Question: Human hunting of bighorn sheep has focused on ‘trophy’ sheep which are the largest male sheep with the longest horns. Consequently, over the last 30 years of hunting pressure, average weight of male sheep has declined by ~20 kilograms and average horn length has declined by ~25 centimeters. These changes are evidence of _________ selection. A- Stabilizing B- Diversifying/Disruptive C- Directional D- There is no evidence of selection in this system

Question: Human hunting of bighorn sheep has focused on ‘trophy’ sheep which are the largest male sheep with the longest horns. Consequently, over the last 30 years of hunting pressure, average weight of male sheep has declined by ~20 kilograms and average horn length has declined by ~25 centimeters. These changes are evidence of _________ selection. A- Stabilizing B- Diversifying/Disruptive C- Directional D- There is no evidence of selection in this system

Biology (MindTap Course List)

11th Edition

ISBN:9781337392938

Author:Eldra Solomon, Charles Martin, Diana W. Martin, Linda R. Berg

Publisher:Eldra Solomon, Charles Martin, Diana W. Martin, Linda R. Berg

Chapter19: Evolutionary Change In Populations

Section: Chapter Questions

Problem 8TYU

See similar textbooks

Similar questions

The 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 sentences
Imagine that you are a conservation biologist responsible for the well-being of a bufello herd consistingof 100 mature males and 100 mature females. In this herd, there is no appreciable mutation, there isno migration in or out, and there is no selection. At the Fuzzy gene locus, there are two alleles, G and E.Homozygous G individuals have fuzzy fur, homozygous E individuals have rough fur, and heterozygoteshave shaggy fur. Suppose you survey the herd and find that there are 44 fuzzy individuals, 72 shaggyindividuals, and 84 rough individuals.a)What is the size of the population?b)Do the alleles have a simple dominance relationship? Describe.c)What are the frequencies of the two alleles?d)Is the population in Hardy-Weinberg equilibrium?If not, how do you know, and what might be the cause?
Imagine that you are a conservation biologist responsible for the well-being of a bufello herd consistingof 100 mature males and 100 mature females. In this herd, there is no appreciable mutation, there isno migration in or out, and there is no selection. At the Fuzzy gene locus, there are two alleles, G and E.Homozygous G individuals have fuzzy fur, homozygous E individuals have rough fur, and heterozygoteshave shaggy fur. Suppose you survey the herd and find that there are 44 fuzzy individuals, 72 shaggyindividuals, and 84 rough individuals. Suppose you watch the buffalo and discover that while all the females breed, a small number of males(10) establish breeding harems, while the other males do not breed.a) What is the effective population size of this herd? That is, what size "ideal" population ofbalanced sex ratio would have genetics similar to this population?b)How does the effective population size compare to the actual population size?c) Under Hardy-Weinberg equilibrium, what…
Question 51 of 51 Click Submit to complete this assessment. Question 51 You have been doing extensive research for 30 years on the frequency of coat colors (black, gray, white) in a guinea pig population located in the Andes Mountains. You suspect that your guinea pig population is undergoing stabilizing selection. If this is the case, what would you expect to find when you graph your data? Select all that apply.A) Two peaks, one at each end of the graph.B) A graph with a single peak towards the far right.C) A graph with a single tall and narrow peak located in the center.D) A graph indicating gray guinea pigs have an advantage over black guinea pigs and white guinea pigs.E) A graph indicating that gray guinea pigs are being selected against.
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
A species of fox has a mean number of 3 Kits, while more or less kits is selected against. This is an example of diversifying selection." true or false
I expect for genetically identical animals that have been reared in similar conditions to have a smaller SD for any parameter that I decide to measure compared to genetically diverse animals that have been grown in a variety of natural environments.
Fligure A Figure C 3: From: "Why our flu vaccines can't keep up" Which one of the graphs shows the frequency of trait variation in the surviving sparrow population after the storm.? Figure A O Figure B e Figure C
Ecalogical seleation Sexual selection What is ecological selection? How is it different from sexual selention torsurviva - Selection by the opposite sex - pormpetitive ad vantage Competition within males females predator avoidanoe selection? What kinds of traits result from ecological selection? Erirae Constraints on adaptive pertecton (optmali Why doesn't natural selection produce optimally adapted organisms? Oren ldaa NOT cop Adigsdon re om civep eb he numet n ognawihrntruclure and e . r e e Tw u n Ecological selection oeed .ha o hore cs Scanned vwith CamScanner
The Tibetans and Han Chinese share several genetic traits and DNA. However, the EPAS1 gene, which increases the ability of red blood cells to carry oxygen even in low oxygen environments, is only commonly found in the Tibetan population that live in higher elevations. Explain why this gene is only common in Tibetan populations from the perspective of competitive advantage and natural selection. Write your answer in three to five sentences
In many cases, one type of organism puts selection on another, so they evolve together. For example, flowers and the pollinators. This is called artificial selection Above statement True or False? give explanation
Changes in the Population There are four major types of selection when it comes to changes being made in an ecosystem. Natural Selection is the process of selecting traits that makes an organism most successful in its given environment. Directional Selection is when individuals at one end of the curve have higher fitness than individuals in the middle or at the other end. Stabilizing Selection is when individuals near the center of a curve have higher fitness than individuals at either end. Disruptive Selection is when individuals at the upper and lower ends of the curve have higher fitness than individuals near the middle. Copyright © 2003-2022 International Academy of Science. All Rights Reserved. O to search (B How does natural selection change allele frequencies in populations? A. Natural selection controls the rate of mutations. B. Natural selection selects alleles that improve fitness. C. Natural selection has no control over allele frequency changes. Rain coming (8)