BIOLOGY (LL)
5th Edition
ISBN: 9781264115495
Author: BROOKER
Publisher: MCG
expand_more
expand_more
format_list_bulleted
Concept explainers
Question
Chapter 23.3, Problem 2EQ
Summary Introduction
To determine: The entire experimental design for the research study proposed by the researchers Ole Seehausen and Jacques van Alphen with reference to figure 23.9 given in the text book.
Introduction: In 1998, Ole Seehausen and Jacques van Alphen investigated the role of sexual selection because it pertains to the male coloration of two cichlid (tropical fresh water fish) species.
Summary Introduction
To determine: The purpose of conducting experiments under two different light conditions.
Introduction: In 1998, Ole Seehausen and Jacques van Alphen investigated the role of sexual selection because it pertains to the male coloration of two cichlid (tropical fresh water fish) species.
Expert Solution & Answer
Want to see the full answer?
Check out a sample textbook solutionStudents have asked these similar questions
Required information
Hfr (thr¹, azi, ton", lact, galt, str) and F¯ (thr¯, azi³, ton³, lac¯, ga, str) cells were mated in an interrupted mating
experiment. The results of replica plating the Str' Thr* exconjugants to test for the presence of the other four genes are
shown in the graph.
Percentage of cells with Hfr genetic
markers among Str' Thr* recombinants
100
80
60
40
20
0
17
44
15
20
22
8
0
0
10
Use the graph to match the minutes that correspond to each gene's map position.
gal
ton
azi
azi
ton'
1
10
20
30
40
Minutes prior to interruption of conjugation
lac
lac+
gal+
I
50
90%
85%
40%
20%
!
Required information
Hfr (thrt, azi, ton", lact, galt, str) and F¯ (thr¯, azi³, ton³, lac, ga, str) cells were mated in an interrupted mating
experiment. The results of replica plating the Str Thr* exconjugants to test for the presence of the other four genes are
shown in the graph.
Percentage of cells with Hfr genetic
markers among Str' Thr* recombinants
100
80
60
40
20
0
0
Multiple Choice
I
30
azi'
lac+
gal+
I
10
20
40
Minutes prior to interruption of conjugation
ton'
gene order could not be determined.
I
50
the fraction of cells with each marker would be 100%.
90%
85%
If a sample had been taken at 70 minutes after mating instead of at 1-minute intervals, then
40%
20%
gene order could be determined because the final fraction of exconjugants with a marker decreases as distance from the origin of transfer increases.
gene order could be determined because the final fraction of exconjugants with a marker increases with distance from the origin of transfer.
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 (LL)
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
- vivo V20 male or female. Remember that since most sex-linked traits are recessive, the person wno shows the trait can have no X's with big superscripted letters. So, y a male carries the trait, he must also show the trait. XDY XDXD XªY PXPX Carrier? (Yes or No) Has the Trait? (Yes or No) Male or Female Phenotype or Appearance of the Individual Guided Questions: 1. What chromosomes will result to a normal phenotype (normal spongy pore trait)? 2. Do all individuals who have the spongy tiny pore allele show it in their physical appearance? Why or why not? 3. Can males be a carrier of an X-linked recessive trait? How about females? Explain. 4. What will be the sex of an individual who is easily affected by an X-linked recessive trait? Why?. The Y chromosome is missing this section of the X chromosome. The lower sections Males are at greater risk for inheritingarrow_forwardActivity 3 In groups, discuss the following question then write your conclusions into your note book In the pea plant, the characteristic of purple (P) flowers is dominant over white (p) while The color of the green pods (G) is dominant over yellow (g). Pollina- tion was carried out between two plants, both purple and green pods and hybrid. 1) Write the genotypes of the parents. 2) Write the genotypes of the gametes, and check their number using the fol- lowing code: The number of types of gametes = 2n, where 'n' is the hybrid traits. 3) Write the genotypes and the phenotype of first generation individuals. 4) Calculate the probability of the appearance of the following models: (1) Genotype (Ppgg). (2) Phenotype, Form (Green Purple).arrow_forwardPlasticity-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_forward
- Question A Numerade Two rough black guinea Question pigs are bred and have twwo offspring. One of the oftspring has rough white fur and the other has. Two rough black guinea pigs when bred together have two offspring. One of them is rough white Just put them thelr places- What is the phenotypic ratio of this cross? Two more and the other is smooth techniques- In quin- Answer Ov of the genotypes would 9. expect. Genotype of the rough, white parent? Rr Bb Genotype of the rough, black parent? Phenotypes Genotypes Rb RRBB Rb RR BrBb rb Rr Bb What is the probability of getting rough, black offspring? What is the probability of getting rough, white offspring? B/E What is the probability of getting smooth, black offspring? Of the 80 offspring that were produced, we might have expected how many of them to be rough and black? Of the 80 offspring that were produced, we might have expected how many of them to be rough and white? Of the 80 offspring that were produced, we might have expected how…arrow_forwardProblem 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?arrow_forwardProblem 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?arrow_forward
- SUBJECT- GENETICS Topic: Human Sex Anomalies Describe the following : a.1. XYY sex anomaly a.2. Jacob’s syndrome 2. Explain why a person engaged in male sexual activity but gradually shifted to a preference for a female role.arrow_forwardLAB 11 I Genetics 1. Sex: First look at expected outcomes for determining sex. Complete the Punnett square below using XX (female) as one parent and XY (male) as the other parent. 2. What percentage of offspring will be XX females? 3. What percentage of offspring will be males?arrow_forwardStil confused on part 3. 3. Use the chi-squared test to determine if these data fit the Hardy-Weinberg equilibrium model. The degrees of freedom for this test should be 1. Why is this appropriate? Is the hypothesis accpeted because the chi square value calulated is less than the critical value from the chart? And why do we use df=1? Is it because we're only looking at 2 alleles?arrow_forward
- Question 2 Review concept 14.1. Select all correct answers. Pp is a representation of O genotype. O phenotype. O heterozygous for that gene. O homozygous for that gene.arrow_forwardSCIENCE 9 WORKSHEET NO. 5-6 OUARTER 1- WEEKS 5-6 Problem Set Solve the following problems. 1. Show a cross between two heterozygous green pod and a homozygous yellow pad. 2. Show the cross between a homozygous constricted purple pod and a homozygous inflated yellow pod 3. What will be the genotype of the offspring if a cross between two heterozygous terminal purple flowers is done? 4. Show a cross between a heterozygous tall green plant and a homozygous short yellow plant. 5. Give the probability of having a heterozygous offspring if a cross between a heterozygous tall inflated pod plant and a homozygaus tall flat pod plant. 6. Acarrier of color blindness woman married a color- blind man. Is carrier offspring? 7. In cattle, the hornless condition (H) is dominant and the horned condition (h) is recessive. A bull without horns is crossed with a cow with harns. Of the four offspring, one (1) is horned and three (3) are hornless. Determine the genotype of the bull and the cow. 8. In…arrow_forwardPart I. A. Examine the gene pool of this population (Column A) and then choose the answer for the following questions from the box in Column B. show computation (3pts each) 10% 30% 40% 50% 60% 70% 1. What is the frequency of the AA genotype in this population? 2. What is the frequency of Aa genotype in this population? 3. What is the frequency of the aa genoty pe in this population? 4. What is the frequency of the A allele in this population? 5. What is the frequency of the a allele in this population?arrow_forward
arrow_back_ios
SEE MORE QUESTIONS
arrow_forward_ios
Recommended textbooks for you
How to solve genetics probability problems; Author: Shomu's Biology;https://www.youtube.com/watch?v=R0yjfb1ooUs;License: Standard YouTube License, CC-BY
Beyond Mendelian Genetics: Complex Patterns of Inheritance; Author: Professor Dave Explains;https://www.youtube.com/watch?v=-EmvmBuK-B8;License: Standard YouTube License, CC-BY