Genetics: Analysis and Principles
5th Edition
ISBN: 9780073525341
Author: Robert J. Brooker Professor Dr.
Publisher: McGraw-Hill Education
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Chapter 27, Problem 8CONQ
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FLORES DIology Second Semester Review
7. Chi Square Analysis: wild dumpy male x ebony wild female
F1:
All wild wild
F2:
142 wild wild males
52 wild ebony males
46 dumpy wild males
17 dumpy ebony males
151 wild wild females
47 wild ebony females
51 dumpy wild females
8 dumpy ebony females
What pattern of inheritance is observed for body color?
Autosomal recessive
Autosomal dominant
Sex-linked recessive
Sex-linked dominant
What are the genotypes of the parents in the P generation?
a.
XBYdd x XbXbDD
b. Bbdd x bbDd
c. BBdd x bbDD
d. BBX Y x bbXDY
How many flies in the F2 generation would you expect to express the dumpy wild phenotype?
a.
289.125
b. 97
c. 96.375
d. 293
4. This question focuses on entrainment.
a. What is entrainment?
b. What environmental cues are involved in entrainment, and which one is most influential?
c. Why is entrainment necessary?
d. Assuming that a flash of darkness is an effective zeitgeber, what impact on circadian
rhythms would you expect to result from an event such as the 2024 solar eclipse (assume
it was viewed from Carbondale IL, where totality occurred at about 2 pm)? Explain your
reasoning. You may wish to consult this phase response diagram.
Phase Shift (Hours)
Delay Zone
Advance Zone
Dawn
Mid-day
Dusk
Night
Dawn
Time of Light Stimulus
e. Finally, give a real-world example of how knowledge of circadian rhythms and
entrainment has implications for human health and wellbeing or conservation biology.
This example could be from your reading or from things discussed in class.
Generate one question that requires a Punnet Squre to solve the question. Then show how you calculate the possibilities of genotype and phenotype
Chapter 27 Solutions
Genetics: Analysis and Principles
Ch. 27.1 - 1. Which of the following is an example of a...Ch. 27.1 - 2. Saying that a quantitative trait follows a...Ch. 27.2 - The variance is a. a measure of the variation...Ch. 27.2 - 2. Which of the following statistics is used to...Ch. 27.3 - 1. For many quantitative traits, genotypes and...Ch. 27.3 - A QTL is a __________ where one or more genes...Ch. 27.3 - 2. To map QTLs, strains are crossed that differ...Ch. 27.4 - 1. In a population of squirrels in North Carolina,...Ch. 27.4 - Prob. 2COMQCh. 27.4 - 3. One way to estimate narrow-sense heritability...
Ch. 27.5 - 1. For selective breeding to be successful, the...Ch. 27.5 - Prob. 2COMQCh. 27 - Give several examples of quantitative traits.How...Ch. 27 - 2. At the molecular level, explain why...Ch. 27 - 3. What is a normal distribution? Discuss this...Ch. 27 - 4. Explain the difference between a continuous...Ch. 27 - What is a frequency distribution? Explain how such...Ch. 27 - 6. The variance for weight in a particular herd of...Ch. 27 - Two different varieties of potato plants produce...Ch. 27 - 8. If , would you conclude that a positive...Ch. 27 - Prob. 9CONQCh. 27 - When a correlation coefficient is statistically...Ch. 27 - 11. What is polygenic inheritance? Discuss the...Ch. 27 - What is a quantitative trait locus (QTL)? Does a...Ch. 27 - 13. Let’s suppose that weight in a species of...Ch. 27 - Prob. 14CONQCh. 27 - 15. From an agricultural point of view, discuss...Ch. 27 - Many beautiful varieties of roses have been...Ch. 27 - 17. In your own words, explain the meaning of the...Ch. 27 - 18. What is the difference between broad-sense...Ch. 27 - The heritability for egg weight in a group of...Ch. 27 - In a fairly large population of people living in a...Ch. 27 - When artificial selection is practiced over many...Ch. 27 - 22. Discuss whether a natural population of wolves...Ch. 27 - 23. With regard to heterosis, is each of...Ch. 27 - Here are data for height and weight among 10 male...Ch. 27 - 2. The abdomen length (in millimeters) was...Ch. 27 - 3. You conduct an RFLP analysis of head weight in...Ch. 27 - 5. Let’s suppose that two strains of pigs differ...Ch. 27 - Prob. 6EQCh. 27 - In a wild strain of tomato plants, the phenotypic...Ch. 27 - The average thorax length in aDrosophilapopulation...Ch. 27 - 9. In a strain of mice, the average 6-week body...Ch. 27 - Prob. 11EQCh. 27 - 11. A danger in computing heritability values from...Ch. 27 - For each of the following relationships,...Ch. 27 - An animal breeder had a herd of sheep with a mean...Ch. 27 - The trait of blood pressure in humans has a...Ch. 27 - Prob. 10EQCh. 27 - Discuss why heritability is an important...Ch. 27 - From a biological viewpoint, speculate as to why...Ch. 27 - 3. What is heterosis? Discuss whether it is caused...
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- Briefly state the physical meaning of the electrocapillary equation (Lippman equation).arrow_forwardExplain in a small summary how: What genetic information can be obtained from a Punnet square? What genetic information cannot be determined from a Punnet square? Why might a Punnet Square be beneficial to understanding genetics/inheritance?arrow_forwardIn a small summary write down:arrow_forward
- Not part of a graded assignment, from a past midtermarrow_forwardNoggin mutation: The mouse, one of the phenotypic consequences of Noggin mutationis mispatterning of the spinal cord, in the posterior region of the mouse embryo, suchthat in the hindlimb region the more ventral fates are lost, and the dorsal Pax3 domain isexpanded. (this experiment is not in the lectures).a. Hypothesis for why: What would be your hypothesis for why the ventral fatesare lost and dorsal fates expanded? Include in your answer the words notochord,BMP, SHH and either (or both of) surface ectoderm or lateral plate mesodermarrow_forwardNot part of a graded assignment, from a past midtermarrow_forward
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