Genes A and B are 7.5 map units apart on one chromosome. Genes C and D are 8.0 map units apart on a second non-homologous chromosome. • The recombination frequency between A and B is? • The recombination frequency between A and C is? • The recombination frequency between C and D is? • The recombination frequency between B and D is?

Genes A and B are 7.5 map units apart on one chromosome. Genes C and D are 8.0 map units apart on a second non-homologous chromosome. • The recombination frequency between A and B is? • The recombination frequency between A and C is? • The recombination frequency between C and D is? • The recombination frequency between B and D is?

Biology 2e

2nd Edition

ISBN:9781947172517

Author:Matthew Douglas, Jung Choi, Mary Ann Clark

Publisher:Matthew Douglas, Jung Choi, Mary Ann Clark

Chapter13: Modern Understandings Of Inheritance

Section: Chapter Questions

Problem 2VCQ: Figure 13.4 Which of the following statements is true? Recombination of the body color and red/...

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Researchers have discovered that some regions of chromosomes are more likely than others to cross over, these areas of frequent crossing over are called "recombination hot spots". Gene A and B are 500,000 bp apart - both genes and the space between them are in a recombination hot spot. Gene C and D are also 500,000 bp apart but the region containing genes C and D are not a recombination hot spot. Would the map distance between A and B be the same as the map distance between C and D? Explain your answer.
Construct a map of the chromosome, with the most accurate map distances, from the following recombination frequencies between individual pairs of genes: C –F 13%, V –F 20%, V –C 8%, S –F 4%, C –S 9%,
Recombination frequencies between four genetically-linked loci in corn are shown in the following table: Loci Recombination Frequency (%) L and Q 20 Q and R 50 R and L 30 Q and W 13 L and W 7 What is the order of the genes on the chromosome? (note: The same answer can be represented forward or backwards. e.g. A B C D = D C B A) LQWR RQWL LRQW QRLW RLWQ
Recombination frequencies between four genetically-linked loci in corn are shown in the following table: Loci Recombination Frequency (%) R and Q 45 W and Q 60 R and W 15 Q and L 10 L and R 35 What is the order of the genes on the chromosome? (note: The same answer can be represented forward or backwards. e.g. A B C D = D C B A) RQWL LQWR QWLR QRLW WRLQ
I am trying to understand how linkage works, and I am hoping someone can explain how to solve the following problem: The diagram shows the linkage maps for four genes: A, B, C, and D. Which genes are most likely to undergo recombination? Which genes are least likely to recombine? A.) A and D B.) C and D C.) B and C
If a recombination frequency cannot be above 50%, what does it mean if two genes are, say, 60 mu apart? Does that mean they technically independently assort, there is just some sort of overestimation? Or that the two genes actually have another gene in between?
mapping three linked genes, the heterozygous AaBbCc was crossed to aabbcc individual the following phenotypes were obtained: ABC 4 abc 2 ABc 150 abC 141 aBc 18 AbC 20 Abc 30 aBC 35 A) What are the alleles found on each parental chromosome(genotypes of the parents)? B) How many double recombinants(cross over) were there? c) what is the linear arrangement of loci on the chromosome?
The recombination frequency between genes a and b is 20%. What is the frequency of crossing over between genes a and b? Explain your reasoning.
Which recombination frequency corresponds to independent assortment and the absence of linkage? 0 0.25 0.50 0.75
Figure 13.4 Which of the following statements is true? Recombination of the body color and red/ cinnabar eye alleles will occur more frequently than recombination of the alleles for wing length and aristae length. Recombination of the body color and aristae length alleles will occur more frequently than recombination of red/brown eye alleles and the aristae length alleles. Recombination of the gray/black body color and long/short aristae alleles will not occur. Recombination of the red/brown eye and long/short aristae alleles will occur more frequently than recombination of the alleles for wing length and body color.
Given the experimental set up below, and knowing the genes for stalked eyes (st) and black bodies (b) are on the same chromosome and recessive to wild type (un-stalked eyes and light body). F2= a=489, b=56, c=497, d=49 A) How many recombinant animals are in the F2 generation? B) ( How far apart, (as both a % recombination and in map units) are the stalk eyed and black bodied genes on this chromosome?
Calculate the recombination frequencies between r2 and h and between r13 and h.