Concepts of Genetics (12th Edition)
12th Edition
ISBN: 9780134604718
Author: William S. Klug, Michael R. Cummings, Charlotte A. Spencer, Michael A. Palladino, Darrell Killian
Publisher: PEARSON
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Chapter 19, Problem 2NST
Summary Introduction
To determine: The experimental approaches to study the mechanism in the transmission of nurturing behavior in rats.
Introduction: Several genetic disorders are recessive in nature, implying that both the parents need to pass on a defective gene in the progeny to develop the genetic disorder. Many recessive genetic disorders are also fatal; therefore, the individuals with such diseases cannot pass the disease to the offspring leading to their hyperactivity or hypoactivity.
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Following a mutagenesis experiment to identify novel genes affecting the circadian clock in Drosophila melanogaster you discover several mutants. You start considering two of those mutants that
you call C and d. The two homozygous C/C and d/d are arrhythmic (arrhythmic is the definition of their phenotype), whereas the two heterozygous C/C and D/d are rhythmic (rhythmic is the definition
of their phenotype) with a 24h period. You make two true-breeding stocks: stock 3 homozygous for C and stock 4 homozygous for d. You cross them in both directions and in both cases you observe
complementation with no difference between males and females. Then you take the progeny of one cross, for instance the F1 of Females 3 x Males 4, and you perform a Testcross. Out of 1000 flies
resulting from the Testcross only 125 are rhythmic.
Using the number of flies expected for the Parental and the Recombinant genotypes and the formula that defines recombination frequency, what is the distance between loci C…
Following a mutagenesis experiment to identify novel genes affecting the circadian clock in Drosophila melanogaster you discover several mutants. You start considering two of those mutants that
you call c and d. The two homozygous c/c and d/d are arrhythmic (arrhythmic is the definition of their phenotype), whereas the two heterozygous C/c and D/d are rhythmic (rhythmic is the definition
of their phenotype) with a 24h period. You make two true-breeding stocks: stock 3 homozygous for c and stock 4 homozygous for d. You cross them in both directions and in both cases you observe
complementation with no difference between males and females. Then you take the progeny of one cross, for instance the F1 of Females 3 x Males 4, and you perform a Testcross. Out of 1000 flies
resulting from the Testcross only 125 are rhythmic.
Considering that out of 1000 flies resulting from the Testcross only 125 are rhythmic how many flies in total are approximatively expected for the Parental genotypes?…
Following a mutagenesis experiment to identify novel genes affecting the circadian clock in Drosophila melanogaster you discover several mutants. You start considering two of those mutants that you call c and d. The two homozygous c/c and d/d are arrhythmic (arrhythmic is the definition of their phenotype), whereas the two heterozygous C/c and D/d are rhythmic (rhythmic is the definition of their phenotype) with a 24h period. You make two true-breeding stocks: stock 3 homozygous for c and stock 4 homozygous for d. You cross them in both directions and in both cases you observe complementation with no difference between males and females. Then you take the progeny of one cross, for instance the F1 of Females 3 x Males 4, and you perform a Testcross. Out of 1000 flies resulting from the Testcross only 125 are rhythmic.
Which is the genotype of the rhythmic flies resulting from the testcross? Select only one answer
1.
C/C d/d
2.
C/c D/d
3.
C/c d/d
4.
c/c…
Chapter 19 Solutions
Concepts of Genetics (12th Edition)
Ch. 19 - Although histone modifications can activate or...Ch. 19 - Prob. 2NSTCh. 19 - Prob. 1CSCh. 19 - Prob. 2CSCh. 19 - A couple well informed about the epigenetic...Ch. 19 - Prob. 1PDQCh. 19 - Prob. 2PDQCh. 19 - Prob. 3PDQCh. 19 - Prob. 4PDQCh. 19 - Prob. 5PDQ
Ch. 19 - Prob. 6PDQCh. 19 - Prob. 7PDQCh. 19 - Prob. 8PDQCh. 19 - Prob. 9PDQCh. 19 - Prob. 10PDQCh. 19 - What are the functions of IncRNAs in epigenetic...Ch. 19 - Prob. 12PDQCh. 19 - What are the differences and similarities among...Ch. 19 - Prob. 14PDQCh. 19 - Prob. 15PDQCh. 19 - Should fertility clinics be required by law to...Ch. 19 - Prob. 17PDQCh. 19 - Prob. 18PDQCh. 19 - A developmental disorder in humans called spina...Ch. 19 - Prob. 20PDQCh. 19 - PraderWilli syndrome (PWS) is a genetic disorder...Ch. 19 - Prob. 22ESPCh. 19 - Prob. 23ESPCh. 19 - Methylation of H3K9 by itself silences genes, but...
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