GENETIC ANALYSIS: AN INTEG. APP. W/MAS
2nd Edition
ISBN: 9781323142790
Author: Sanders
Publisher: Pearson Custom Publishing
expand_more
expand_more
format_list_bulleted
Concept explainers
Videos
Textbook Question
Chapter 22, Problem 16P
Certain animal species, such as the black-footed ferret, are nearly extinct and currently exist only in captive populations. Other species, such as the panda, are also threatened but exist in the wild thanks to intensive captive
Expert Solution & Answer
Want to see the full answer?
Check out a sample textbook solution
Students have asked these similar questions
You find a population of spotted salamanders that previous researchers have determined
is in Hardy-Weinberg equilibrium. The allele that confers yellow spots (Y) is dominant
The frequency of yellow-spotted salamanders in this population is 0.51 (This means
51% of the salamanders are
yellow-spotted.)
What is the frequency of heterozygotes (Yy) in this population?
What is the frequency of homozygous dominants (YY) in this population?
Below is a diagram showing decreased fitness before and after a hypothetical
bottleneck in which all of the inbreeding depression is due to increased homozygosity
for deleterious recessive alleles. The open circles show the average fitness of
hypothetical 'mutant-free' individuals that have no deleterious alleles. The shaded
circles show the average fitness of individuals produced by random mating. The dark
circles show the average fitness of individuals with an Fof 0.25 (equivalent to full-sib
matings).
In the diagram on the right, imagine that 'before' refers to before genetic rescue has
been instituted (that is, before managed gene flow into a small and isolated population).
The circles are defined the same as above. Draw what the circles (unfilled, grey filling,
and dark filling) would look like in the 'after' portion of the diagram, that is, after a
single pulse of gene flow from a small number (~5) of translocated individuals, if fixed
genetic load decreases in this population.…
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?
Chapter 22 Solutions
GENETIC ANALYSIS: AN INTEG. APP. W/MAS
Ch. 22 - 20.1 Compare and contrast the terms in each of the...Ch. 22 - In a population, what is the consequence of...Ch. 22 - 20.3 Identify and describe the evolutionary forces...Ch. 22 - Describe how natural selection can produce...Ch. 22 - Thinking creatively about evolutionary mechanisms,...Ch. 22 - 20.6 Genetic drift, an evolutionary process...Ch. 22 - Over the course of many generations in a small...Ch. 22 - Catastrophic events such as loss of habitat,...Ch. 22 - 20.9 George Udny Yule was wrong in suggesting that...Ch. 22 - 20.10 The ability to taste the bitter compound...
Ch. 22 - Figure 20.6 illustrates the effect of an ethanol ...Ch. 22 - 20.12 Biologists have proposed that the use of...Ch. 22 - 20.13 Two populations of deer, one of them large...Ch. 22 - 20.14 Directional selection presents an apparent...Ch. 22 - 20.15 What is inbreeding depression? Why is...Ch. 22 - 20.16 Certain animal species, such as the...Ch. 22 - Genetic Analysis 20.1 predicts the number of...Ch. 22 - 20.18 In a population of rabbits, and . The...Ch. 22 - Sickle cell disease (SCD) is found in numerous...Ch. 22 - 20.20 Epidemiologic data on the population in the...Ch. 22 - The frequency of tasters and nontasters of PTC...Ch. 22 - Tay-Sachs disease is an autosomal recessive...Ch. 22 - 20.23 Cystic fibrosis (CF) is the most common...Ch. 22 - 20.24 In the mouse, Mus musculus, survival in...Ch. 22 - 20.25 In a population of flowers growing in a...Ch. 22 - Assume that the flower population described in the...Ch. 22 - 20.27 ABO blood type is examined in a Taiwanese...Ch. 22 - 20.28 A total ofmembers of a Central American...Ch. 22 - 20.29 A sample offield mice contains individuals...Ch. 22 - Prob. 30PCh. 22 - Albinism, an autosomal recessive trait...Ch. 22 - Prob. 32PCh. 22 - 20.33 Evaluate the following pedigree, and answer...Ch. 22 - Evaluate the following pedigree, and answer the...Ch. 22 - The following is a partial pedigree of the British...Ch. 22 - Draw a separate hypothetical pedigree identifying...Ch. 22 - Prob. 37PCh. 22 - 20.38 Achromatopsia is a rare autosomal recessive...Ch. 22 - 20.39 New allopolyploid plant species can arise by...
Knowledge Booster
Learn more about
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
- 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…arrow_forwardKnowing that initial heterozygosity will change over time, predict the genetic 5-year trend of a mountain yellow-legged frog population with an effective breeding population size of: a. 20 individuals b. 250 individualsWhat is the percentage of heterozygosity for each year from years 1 through 5?arrow_forwardYou observe some bark beetles with different feeding behaviors. You find that the behavioral phenotypes you observed are closely associated with the following genotypes. genotype phenotype number observed BB feeds under bark 60 Bb feeds on top of bark 24 bb feeds on leaves 16 a) What are the allele frequencies and the expected number (out of 100 beetles) of genotypes? b) Calculate the Chi-Squared value (c2). Then look up the p-value using this Chi-squared calculator: https://www.mathsisfun.com/data//chi-square-calculator.html Enter “1” for Degrees of Freedom. (There are 3 genotype categories, but only 1 DF because they are not fully independent—calculated from just 2 allele frequencies). The p-value is the probability that you would see the deviance you observed by chance, assuming the null hypothesis is true). Report both values. Is the population in H-W equilibrium? c) If you answered “No” to b): Provide at least three biologically…arrow_forward
- In Manx cats, the recessive allele for tail length can be lethal. A heterozygous dominant genotype results in a shortened tail, while a homozygous dominant genotype results in a normal tail. A homozygous recessive genotype is lethal. In an ideal Manx cat population exhibiting Hardy-Weinberg equilibrium, if the lethal allele has a frequency of 0.22, what percentage of the Manx cat population retains a shortened or normal tail length? Express your answer using three significant digits.arrow_forwardYou observe some bark beetles with different feeding behaviors. You find that the behavioral phenotypes you observed are closely associated with the following genotypes. genotype phenotype number observed BB feeds under bark 60 Bb feeds on top of bark 24 bb feeds on leaves 16 a) What are the allele frequencies and the expected number (out of 100 beetles) of genotypes? b) Calculate the Chi-Squared value (c2). Then look up the p-value only using this Chi-squared calculator: https://www.mathsisfun.com/data//chi-square-calculator.html Clear all the values in the box at upper right, enter the Chi Square value that you obtain FROM YOUR CALCULATIONS in the Chi-Square box, and enter 1 for the degrees of freedom. Is the population in H-W equilibrium? c) If you answered “No” to b): Provide at least three biologically valid reasons why the observed beetle population may not be in equilibrium. If you answered “Yes” to b): Why do you think this…arrow_forwardIn a population of 10,000 individuals, where 3600 are MM, 1600 are Mm, and 4800 are mm, what are the frequencies of the M alleles and the m alleles? M= 0.7; m = 0.3 M= 0.6; m = 0.4 М-0.8; т %3D 0.2 M= 0.9; m = 0.1 M= 0.5; m = 0.5arrow_forward
- Calculate the rate of genetic change in feed conversion in a pig population given the following : Heritability of feed conversion (h2) = 0.35 Phenotypic standard deviation (αp) = 0.2 kg/kg Accuracy of male selection = 0.8 Accuracy for female selection = 0.5 Intensity of male selection (im) = -2.4 Intensity of female selection (if) = -1.5 Generation interval for males (Lm) = 1.8 years Generation interval for females (Lf) = 1.8 yearsarrow_forwardButterflies show 3 phenotypes due to incomplete dominance at the D locus with alleles DY and DB giving green phenotype in heterozygotes and yellow and blue in homozygotes. If the butterflies were subject to predation by birds that could easily detect blue & yellow individuals, what effect would you expect this to have on the genotype and allele frequencies over time? Indicate possible percentages.arrow_forward(b) There is a positive correlation between branch width of trees and hind limb length of the brown anole lizard: Wide branch diameter = long hind limbs Narrow branch diameter= short hind limbs A group of lizards becomes separated from the main group on Island A due to a catastrophic hurricane that carries this small group out to sea. A few lizards are able to make it to uninhabited, dry land (Island B) and breed over several generations separated from the lizards on Island A. Scientists, monitoring the lizard populations, record the change in hind limb length of these two new populations over time. The results are shown below: Island A Island B Linear (Island A) Linear (Island B) 1975 1980 1985 1990 1995 2000 2005 2010 2015 Figure 1: Change in hind limb length of brown anole lizards Page 2 CONT'D from Page 1 i. State the type of speciation event that has occurred and fully explain how this event could possibly give rise to a new species of anole lizard on Island B. ii. Based on the…arrow_forward
- This type of experiment, where members of an outbred populations are introduced to an inbred population as mating partners, is sometimes called a “genetic rescue”. How might measuring the average heterozygosity at a number of loci in the Swedish snake population allow you to test whether the introduced snakes had actually bred successfully with the inbred Swedish snakes?arrow_forwardA species of butterfly shows variation in the length of the antennae. You measure antennae in a butterfly population and find the mean to be 15 mm. You calculate a heritability of antennae length to be 1 (h2 = 1). %3D That summer, there is a severe drought. Many of the butterflies die and only a few survive to reproduce. The surviving butterflies have a mean antennae length of 17 mm. a) What is the predicted mean limb-length of the offspring of the surviving butterflies? [ Select ] b) What type of selection was acting on antennae length in these butterflies? [ Select ] c) Five years later, you go back and measure antennae length in this butterfly population again. Every butterfly in the population has antennae measuring 16 mm. What is the heritability of antennae length in this population now? [Select ]arrow_forward*You are looking at the heritability of litter size at weaning in pigs (17%) *The herd average for this trait is 10 piglets per litter at weaning *When looking at an individual Sow, she has 12 piglets per litter at weaning Calculate the following: -What is the Estimated Breeding Value of the Sow -Determine the Sows Expected Progeny Difference ***Make sure to enter your answers using numbers & use decimals when necessary*** The EBV of the sow is ______________________more pigs per litter then the herd average. Therefore, the sows progeny can be expected to have ______________more pigs per litter then the herd average.arrow_forward
arrow_back_ios
SEE MORE QUESTIONS
arrow_forward_ios
Recommended textbooks for you
Biology: The Dynamic Science (MindTap Course List)BiologyISBN:9781305389892Author:Peter J. Russell, Paul E. Hertz, Beverly McMillanPublisher:Cengage Learning
Biology: The Dynamic Science (MindTap Course List)
Biology
ISBN:9781305389892
Author:Peter J. Russell, Paul E. Hertz, Beverly McMillan
Publisher:Cengage Learning
What is Evolution?; Author: Stated Clearly;https://www.youtube.com/watch?v=GhHOjC4oxh8;License: Standard Youtube License