Campbell Biology: Custom Edition
18th Edition
ISBN: 9781323717271
Author: Urry, Cain, Wasserman, Minorsky, Reece
Publisher: PEARSON C
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Chapter 15.3, Problem 2CC
VISUAL SKILLS Ø For each type of offspring of the test-cross in Figure 15.9, explain the relationship between its
Figure 15.9 Inquiry How does linkage between two genes affect inheritance of characters?
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Identity gene 1 (bl, pr, vg)
Identity gene 2 ( bl, pr, vg)
Identity gene 3 ( bl,pr, vg)
How many map units separate genes 1 and 2 ( Distance 1)?
How many map units separate genes 2 and 3 ( distances 2) ?
Select Cross
Ignore sex of flies
Include a test of hypothesis
Results for Cross #2
Phenotype
Observed
Proportion
4
0.0039
SV
509
0.4956
EY
506
0.4927
SV. EY
8
0.0078
Total
1027
1.0000
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Chapter 15 Solutions
Campbell Biology: Custom Edition
Ch. 15.1 - Which one of Mendel's laws describes the...Ch. 15.1 - MAKE CONNECTIONS Review the description of...Ch. 15.1 - WHAT IF? Propose a possible reason that the first...Ch. 15.2 - A white-eyed female Drosophila is mated with a...Ch. 15.2 - Neither Tim nor Rhoda has Duchenne muscular...Ch. 15.2 - MAKE CONNECTIONS Consider what you learned about...Ch. 15.3 - When two genes are located on the same chromosome,...Ch. 15.3 - VISUAL SKILLS For each type of offspring of the...Ch. 15.3 - Prob. 3CCCh. 15.4 - Prob. 1CC
Ch. 15.4 - Prob. 2CCCh. 15.4 - Prob. 3CCCh. 15.5 - Gene dosagethe number of copies of a gene that are...Ch. 15.5 - Reciprocal crosses between two primrose varieties,...Ch. 15.5 - WHAT IF? Mitochondrial genes are critical to the...Ch. 15 - What characteristic of the sex chromosomes allowed...Ch. 15 - Why are males affected by X-Iinked disorders much...Ch. 15 - Why are specific alleles of two distant genes more...Ch. 15 - Prob. 15.4CRCh. 15 - Explain how genomic imprinting and inheritance of...Ch. 15 - A man with hemophilia (a recessive, sex-linked...Ch. 15 - Pseudohypertrophic muscular dystrophy is an...Ch. 15 - A wild-type fruit fly (heterozygous for gray body...Ch. 15 - A planet is inhabited by creatures that reproduce...Ch. 15 - Using the information from problem 4, scientists...Ch. 15 - A wild-type fruit fly (heterozygous for gray body...Ch. 15 - Assume that genes, A and B are on the same...Ch. 15 - Two genes of a flower, one Controlling blue (B)...Ch. 15 - You design Drosophila crosses to provide...Ch. 15 - Banana plants, which are triploid, are seedless...Ch. 15 - EVOLUTION CONNECTION Crossing over is thought to...Ch. 15 - SCIENTIFIC INQUIRY DRAW IT Assume you are mapping...Ch. 15 - WRITE ABOUT A THEME: INFORMATION The continuity of...Ch. 15 - SYNTHESIZE YOUR KNOWLEDGE Butter flies have an X-Y...
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- Tick all the essential steps to demonstrate a genetic linkage between a disease and a molecular marker in humans. identify the alleles of the genetic marker only for diseased individuals in the pedigree enumerate parental type individuals sequence the wild-type and mutant alleles to find the mutation no correct answer calculate a Lod score calculate the recombination frequency between the mutation and the molecular marker identify the alleles of the genetic marker for each individual in the pedigree pedigree analysis cloning the defective gene enumerate recombinant individualsarrow_forwardPls help with below homwork.arrow_forwardGive typed full explanationarrow_forward
- Question4 first worksheet helparrow_forwardGene mapping using the Three-point Testcross a) Given the following alleles that control seed traits:W = wrinkled G = green R = roundw = smooth g = yellow r = oval b) Results of a cross with a triple heterozygote revealed the following phenotypes:30 smooth yellow round4 smooth green round958 wrinkled green round2 wrinkled yellow oval18 wrinkled yellow round946 smooth yellow oval16 smooth green oval26 wrinkled green oval c) Determine the order of the genes and the distance between them in centiMorgan (cM).Construct a gene map to show your results. TIP: Based on the phenotypes, determine the alleles in the gametesarrow_forwardquestion is attachedarrow_forward
- This exercise primarily addresses o MLO 1: Correctly assign and interpret allele symbols according to the conventions of the fruit fly research community. o MLO 2: Correctly assign genotypes and phenotypes to parents and offspring in genetic crosses given a mode of inheritance. Autosomal Recessive Inheritance We learned in the Linkage Mapping lab module the conventions for representing alleles in fruit flies. Recall that we use one to three letters, and the case (upper or lower) is determined by whether the mutant allele is recessive or dominant. Additionally, we add a "+" as a superscript to indicate the wild-type ("normal") allele. For example, if a new mutant phenotype is recessive, we can represent the recessive allele as m. Then the wild-type allele is mt, and m+ > m. Based on the rule of dominance, we can predict phenotypes based on genotypes: mm Wild type Wild type Mutant m+m mmarrow_forwardIdentify gene 1( bl, pr, vg) Identity gene 2 ( bl, pr, vg) Identify gene 3 ( bl, pr, vg)arrow_forwardselect whcih ic correct When 2 wildtype alleles are on the same parental chromosome, this is known as [Combined or Coupling or dispersed or heterozygous or Repulsion] . In sharp contrast [Combined or Coupling or dispersed or heterozygous or Repulsion] is when 1 wildtype allele and 1 mutant allele are on the same parental chromosomearrow_forward
- Activity E: Predicting the outcome of a dihybrid cross The resulting phenotypic ratios in the F₂ generation of a dihybrid cross (2 traits) can be quite different than those observed from a monohybrid cross, but the process is essentially the same. First, you list all possible gametes each parent and subsequent parents can produce. Second, you then assign the gametes to a Punnett square and fill it in. Finally, you count the progeny and determine the number of progeny in each phenotypic category. Remember, when determining the types of gametes possible, each gamete must have one member of each homologous pair of chromosomes. This means there needs to be one copy of every gene. For example, if you are considering a T gene (ability to taste PTC) and an F gene (let's say earwax texture- wet earwax is dominant and dry earwax is recessive), each gamete must have one allele for the T gene (either T or t) and one allele for the F gene (either For f).arrow_forwardNeed help with the question below ?arrow_forwardWhat is the difference between Genetic Distance and Physical Distance? Use pictorial and tabular references to make your answer clear. Kindly also give an example of genetic and physical map like Drosophila, Yeast or Maize of any chromosome.arrow_forward
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