BIOLOGY
5th Edition
ISBN: 9781264104680
Author: BROOKER
Publisher: MCG
expand_more
expand_more
format_list_bulleted
Concept explainers
Question
Chapter 23.3, Problem 3EQ
Summary Introduction
To determine: The meaning of sexual selection with reference to experiments performed in figure 23.9 given in the text book.
Introduction: In 1998, Ole Seehausen and Jacques van Alphen investigated the role of sexual selection by performing experiments under two different light conditions. This was done to see sexual behavior in specific light conditions.
Expert Solution & Answer
Want to see the full answer?
Check out a sample textbook solutionStudents have asked these similar questions
Problem 2) Skin colour in dolphins is determined by a single
gene showing incomplete dominance giving rise to 3 phenotypes
Brown, Pink & White. A survey of a large population of dolphins
was carried out and the phenotypes recorded. However a student
who had some of the data stored on their phone fell overboard and
unfortunately the data was lost. The only data saved was that the
brown homozygotes (BB) were 59% of the population .
a) What would be the percentage of pink heterozygotes and white
homozygotes?
b) What percentage of the gametes that give rise to the next
generation of dolphins in this population will contain the white W
allele?
Problem 2) Skin colour in dolphins is determined by a single gene showing incomplete dominance giving rise to 3 phenotypes Brown, Pink & White. A survey of a large population of dolphins was carried out and the phenotypes recorded. However a student who had some of the data stored on their phone fell overboard and unfortunately the data was lost. The only data saved was that the brown homozygous dominants (BB) were 64% of the population .
a) What would be the percentage of pink heterozygotes and white homozygotes?
ALL WORKING MUST BE SHOWN
Problem 3)
Butterflies show 3 phenotypes due to incomplete dominance at the
D locus with alleles D' and DB giving green phenotype in
heterozygotes and yellow and blue in homozygotes
a) A population of butterflies showed 49% yellow, and 51% blue
and green. What percentage of the gametes for the next generation
would contain the DB allele?
b) In another population only 1% of the butterflies are blue, What
is the DY allele frequency?
c) 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.
Chapter 23 Solutions
BIOLOGY
Ch. 23.1 - Prob. 1CSCh. 23.2 - Prob. 1CCCh. 23.2 - Prob. 2CCCh. 23.2 - Prob. 3CCCh. 23.3 - Prob. 1CCCh. 23.3 - Prob. 1EQCh. 23.3 - Prob. 2EQCh. 23.3 - Prob. 3EQCh. 23.4 - Genetic Drift Concept Check: How does the...Ch. 23.4 - Prob. 1CS
Ch. 23.5 - Prob. 1CCCh. 23 - Population geneticists are interested in the...Ch. 23 - The Hardy-Weinberg equation characterizes the...Ch. 23 - Prob. 3TYCh. 23 - Prob. 4TYCh. 23 - Prob. 5TYCh. 23 - Prob. 6TYCh. 23 - Prob. 7TYCh. 23 - Prob. 8TYCh. 23 - Kimuras proposal regarding neutral variation...Ch. 23 - Populations that experience inbreeding may also...Ch. 23 - Prob. 1CQCh. 23 - Prob. 2CQCh. 23 - Prob. 3CQCh. 23 - Antibiotics are commonly used to combat bacterial...Ch. 23 - Discuss die similarities and differences among...
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
- INTERPRET DATA Compare the two graphs in Figure 1-17. What information does the second graph illustrate? What possible explanation can you give for the differences shown in the two graphs? (a) Number of chimpanzees who successfully employed specific method of tool use. (b) Number of chimpanzees who successfully employed learned method of tool use two months later. Figure 1-17 An experiment testing learning in chimpanzee populations In the photo, wild chimpanzees are shown observing a member of their group using a tool.arrow_forwardProblem 3) Butterflies 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 a) A population of butterflies showed 49% yellow, and 51% blue and green. What percentage of the gametes for the next generation would contain the DB allele? b) In another population only 1% of the butterflies are blue, What is the DY allele frequency? c) 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_forwardEXERCISE 6 HARDY-WEINBERG EQUILIBRIUM Work in a small group or alone to complete this exercise. In human population X, consider the simple Mendelian trait for freckles. F is the dominant allele and f'is the recessive allele. Individuals who are homozygous dominant (FF) or heterozygous (F) for the trait express freckles. Individuals who are homozygous recessive (ff) for the trait do not express freckles. In this population, 30% (0.3) of the alleles are recessive (f ) and 70% (0.7) are dominant (F). 1. Use the Hardy-Weinberg equation to determine the genotype frequencies we should expect in the next generation. Be sure to show your work. 2. You have collected data on the observed genotype frequencies of the next generation. They are 60% FF, 30% Ff, and 10% ff. Based on these observations and your expectations, is this trait currently evolving in this population? Why or why not?arrow_forward
- Trivla Game Show _Make Your Own Tri ngston.schoology.com/common-assessment-delivery/start/4789189591?action=onresume&submissionld=463322566 Dillon WF g Aa v Done In guinea pigs, black hair (B) is dominant to white hair (b) and rough hair (R) is dominant to smooth hair (r). What are all the possible genotypes of a guinea pig that has black, rough hair? (Select all that apply.) O BBRR BBRr BBrr BBRR BbRr O bbRR O bbRr O bbrr O Black O White O Rough OSmooth O Rough O Smootharrow_forwardProblem 4) About 7% of men in a population are red-green colour blind due to a sex-linked recessive gene. Assuming random mating in the population with respect to colour blindness; a) What percentage of women would be expected to be colour blind? b) What percentage of women would be expected to be heterozygous? c) What percentage of men would be colour blind in the next generation?arrow_forwardQ2. In a drosophila experiment involved the gene for wing size (dominant large, L, and recessive small, 1) and the gene for body color (dominant yellow, G, and recessive black, g). If we had no information about the location of both genes, what would be all the possible scenarios of the cross GgLl x ggll? Keep your answer short and focus on the genotypes and phenotypes frequencies of the progeny in each scenario. instead You arearrow_forward
- Plasticity-10601931 Tools Add-ons Help Last edit was seconds ago ext Arial BIU A 10 6 1. The ability to grow differently colored fur based on the season provides Arctic foxes with a selective advantage. What do you think that is? 2. The Arctic fox exhibits "phenotypic plasticity." To understand what that means, let's first define the following terms: 2a. Phenotype: 2b. Plasticity: 3. Example 2: The American Peppered Moth caterpillars (Biston betularia cognataria) are able to Now, let's examine a couple more examples of phenotypic plasticity. Support | Schoology Blog I PRIVACY POLICY !!!arrow_forwardPROBLEM SET #4: Assume that pattern baldness is a sex-linked, recessive trail. In a population of 100 humans, 6 males were bald. Given this... can you calculate: What are the frequencies of the normal P allele and the baldness p allele? What is the expected frequency of bald-females? What is the expected frequency of heterozygous carriers? What gender would these carriers be? DELL Ce %23 %24 & 4 8. t y f h j k C V m baarrow_forwardActivity 4 Identification of phenotype of known genotype The characteristic of the color of the red tomato fruit (R) is dominant over the characteristic of the yellow color (r) The characteristic of the color of white flowers (W) is dominant over the characteristic of the color of the yellow flowers (w), and the characteristic length of the stem of the plant (T) is dominant over the short characteristic (t) If a red fruit plant with yellow and long-stemmed flowers is crossed, with anotheryellow, white-flowered and short-stemmed plant, knowing that the dominant characteristic is pure. What is the phenotype of individuals of the resulting generation?arrow_forward
- 11 del 154 Chapter 13 smo ad plo odtone gibier Telow and ? QUESTION Kaylee Kauff EXERCISE #3 "Genes and Traits" Genetic traits are features (either structural or biochemical) of the organism that are produced by the action of one or more genes. If you have the gene, then you develop the trait. If you don't have the gene, then you don't develop the trait. Turning Genes On and Off All of the cells of your body have the same genes. However, in each cell certain genes are turned "on" and other genes are turned "off." How the cell functions is determined by which genes are on and which genes are off. Type of Gene Basic Metabolism Genes Sugar Releasing Gene Melanin Gene Digestive Enzyme Gene Skin Cell On Off On Off Liver Cell On On Off Off Intestine Cell On Off Off On Science is not yet able to decipher all of the processes controlling which genes are on or off in a particular cell. However, certain general. mechanisms have been discovered. For example, in some cases, a substance in the…arrow_forward?action=Donresume&submissionld%3D459115049 Trait Dominant Allele Recessive Allele Body Color Brown (B) Albino (b) Back Stripe No Stripe(N) Stripe (n) Fill in the blanks (1-4) in the Punnett square below and answer the questions. Bn Bn Bn Bn bN BbNn BbNn BbNn bn Bbnn Bbnn Bbnn bN BbNn BbNn BbNn bn Bbnn Bbnn Bbnn For the next two questions below, fill in the allele(s) that you are looking for to determine the number of each type of traits specified. (HINT: Remember how many alleles do you need to have the dominant trait vs the recessive trait) How many gecko offspring will be brown and have a stripe? How many gecko offspring will be albino and have no stripe? What is the phenotype of the genotype BbNn? : B :: b :: N : BB :: Bb :: bb :: NN : Nn :: nn :: Brown and no stripe : Brown and a stripe : Albino and no stripe : Albino and a stripe : 0 :: 4 :: 6 :: 9 :: 8 : 12 :: 16 : BBNN :: BBNN : BBnn :: BBNN : BBN. : Bbnn : bbNN : bbNn :: bbnnarrow_forwardPlease answer fast The phenotypes of organisms are products of genetics, environment, and gene x environment interactions. Describe how genes and environment interact to determine phenotypes using real-life examples.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 LearningBiology (MindTap Course List)BiologyISBN:9781337392938Author:Eldra Solomon, Charles Martin, Diana W. Martin, Linda R. BergPublisher:Cengage Learning
Biology: The Dynamic Science (MindTap Course List)
Biology
ISBN:9781305389892
Author:Peter J. Russell, Paul E. Hertz, Beverly McMillan
Publisher:Cengage Learning
Biology (MindTap Course List)
Biology
ISBN:9781337392938
Author:Eldra Solomon, Charles Martin, Diana W. Martin, Linda R. Berg
Publisher:Cengage Learning
Genetic Variation and Mutation | 9-1 GCSE Science Biology | OCR, AQA, Edexcel; Author: SnapRevise;https://www.youtube.com/watch?v=bLP8udGGfHU;License: Standard YouTube License, CC-BY