Question
  1. Trihybrid Cross: Several testcrosses have revealed the rate of recombination for the following genes which are KNOWN TO BE LINKED:

 

k-m       0.30

k-l         0.76

l-m        0.50

 

What is the order of the three genes and why is the frequency of recombination between the closest pair of genes not equal to the recombination rate between the two genes farthest apart? (0.8 > 0.76)

 

Expert Solution

Want to see the full answer?

Check out a sample Q&A here
Blurred answer
Students who’ve seen this question also like:
Human Heredity: Principles and Issues (MindTap Course List)
Human Heredity: Principles and Issues (MindTap Course List)
11th Edition
ISBN: 9781305251052
Author: Michael Cummings
Publisher: Cengage Learning
Not helpful? See similar books
marketing sidebar icon
Want to see this answer and more?
Experts are waiting 24/7 to provide step-by-step solutions in as fast as 30 minutes!*
*Response times may vary by subject and question complexity. Median response time is 34 minutes for paid subscribers and may be longer for promotional offers.

Related Biology Q&A

Find answers to questions asked by students like you.

Q: Genetic cross with independent assortment (unlinked traits). Wolves are sometimes observed to have…

A: A dihybrid cross is a type of genetic cross between two individuals with either homozygous or…

Q: incomplete dominance   What is the phenotype of the plant with RR genotype?  What is the color of…

A: The phenotype of RR genotype is red color as it is homozygous dominant.  The color of plant with…

Q: What is a meaning of genetic linkage? How this test is used? Describe the meaning of SNP (single…

A: Since you have posted a question with multiple questions, we will solve the first question for you.…

Q: In autotetraploid Chinese primrose (Primula sinensis L.), the gene controlling stigma color is very…

A: Autotetraploid are organisms that contain four sets of chromosomes that are derived from the same…

Q: Monohybrid Cross Review B For each cross, write out the alleles of each parent, type in the Punnett…

A: the Punnett square table is given below :

Q: The recombination frequency between genes a and b is 20%. What is the frequency of crossing over…

A: Recombination frequency is used in gene mapping, which is used to measure the genetic linkage.…

Q: The recombination frequency between genes a and b is 20%. What is the frequency of crossing over…

A: Genetics is the study of genes, their interactions, and the effect of environment on genes. Broadly…

Q: The recombination frequency between genes a and b is 20%. What is the frequency of crossing over…

A: Recombination frequency is a measurement of genetic linkage. It is used in the formation of genetic…

Q: Hemophilia and color blindness are both recessive conditions caused by genes on the X chromosome. To…

A: Recombination frequency is defined as the proportion of recombinant offspring produced in a genetic…

Q: How to build a genetic map? What is necessary? How does it relate to the physical distance? i. If I…

A: Genetic map is a physical representation of the order of genes in a chromosome. It represents the…

Q: hen crossing a true breeding white mouse with a true breeding brown mouse your friend tells you she…

A: Genes are the functional unit of heredity. They contain information that is transferred from one…

Q: Two genes on chromosome 7 of corn are glossy (g) for leaf texture and ramosa (r), which determines…

A: The formula of calculating recombination frequency is : Recombinant Frequency = number of…

Q: Why are punnet squares a useful model for studying traits and genetic disorders? 2.Make a dihybrid…

A: The punnet square refers to a square diagram that is employed in the study of genetics to predict…

Q: "Practical" Section - Plant Crosses: In the following section you will be given a table displaying…

A: Kernel colorpurple color (PP)= dominantyellow color (pp)= recessive Kernel texturesmooth texture…

Q: Dihybrid Crosses In guinea pigs, black (B) is dominant to brown color (b). Short hair (H) is…

A: Given: In guinea pigs, Black color (B) dominant to brown color (b). Short hair (H) dominant to long…

Q: Based on data identify the parentals and the recombinants in the chart above. Then draw (create a…

A: Genetic recombination generally happens randomly but mostly between two distantly positioned genes.…

Q: A fruit fly with a gray body and red eyes (genotype BbPp) is mated with a fly having a black and…

A: The fruit fly with gray body and red eyes is heterozygous for both the traits and its genotype is…

Q: Dihybrid crosses: In dogs, black coat color(B) is dominant to yellow coat fur (b), and straight fur…

A: Click to see the answer

Q: Solve the following problem by listing the given genotypes, test crosses, and genotypic and…

A: In plants, the serrated leaf is a dominant trait that can be represented by the genotype-SS or Ss…

Q: Create monohybrid crosses from the following information: 33. Homozygous monkey toes with non-monkey…

A: Introduction :- Genotype of an individual organism is defined as the total sum of genes and…

Q: Gene mapping using the Three-point Testcross a) Given the following alleles that control seed…

A: In the problems given like the given question, we should first determine the parental genotypes and…

Q: Recombination frequencies between three loci in corn are shown in the following table: Loci…

A: Recombination frequency is the frequency with which a single chromosomal crossover will take place…

Q: (a) Án AB gamete from an AaBb individual? 7-9. If two gene pairs A and a and B and b are assorting…

A: Genetics is the branch of biology that deals with the study of genes, their variation, and heredity…

Q: 38 Which cross would produce phenotypic ratios that would best illustrate the Law of Dominance?…

A: Mendel’s law of dominance states that: “When parents with pure, contrasting traits are crossed…

Q: Recombination frequencies between three loci in corn are shown in the following table: Loci…

A: Recombination frequency is the frequency with which a single chromosomal crossover will take place…

Q: Using the punnet square (mono-hybrid cross) solve the following: In some cattle the genes for brown…

A: Codominance is a form of inheritance in which the alleles of a gene pair in a heterozygous are fully…

Q: ABO Blood Type The following pedigree shows the incidence of ABO blood types in a family. dentify…

A: ABO Blood TypeThe following pedigree shows the incidence of ABO blood types in a family. Parents: AB…

Q: Consider the genetic map below. (a) In a total of 1000 observed progeny, how many would be expected…

A: Given: total of 1000 observed progeny. Genetic map: A-----10cM----B--2.5cM--C Percent recombination…

Q: 近 In 1911, Thomas Hunt Morgan collected the following crossover gene frequencies while studying…

A: The genes are the hereditary unit of an organism. The genes are present in the chromosome that is…

Q: During a dihybrid cross involving two linked genes (two-point testcross), 8 flies showed a…

A: Two point test cross follows an mendelian fashion in which Heterozygous individual is crossed with a…

Q: mapping three linked genes, the heterozygous AaBbCc was crossed to aabbcc individual the following…

A: The genes that are in close proximity will have a very low possibility of occurrence of…

Q: Match the term with the correct definition or example       Product of a cross between true…

A: There are many words that we come across while discussing genes and gene expressions, like genotype,…

Q: DATA 29. MA R. W. Allard and W. M. Clement determined recombination rates for a ANALYSIS series of…

A: When genes are close together on the same chromosome then they are said to be linked. As they stick…

Q: Locus A has two alleles (A and a) while locus B has two alleles (B and b). The recombination…

A: Recombination frequency =  recombinants/total progeny x 100. Experimental recombination frequencies…

Q: Locus A has two alleles (A and a) while locus B has two alleles (B and b). The recombination…

A: Recombination is the process by which genes separate from each other during the crossover of…

Q: avé positions of three genes (A, B and C) that are thought to be on the same chromosome of the…

A: Genes are present on the chromosomes and determine the genetic traits.

Q: INCOMPLETE DOMINANCE A red carnation plant is crossed with a yellow carnation plant. What is the…

A: Incomplete dominance is one in which the both the characteristics of an allele are partially…

Q: A female of genotype a b c + + + produces 100 meiotic tetrads. Of these, 68 show no crossover…

A: A four-part structure that forms during the prophase of meiosis and consists of two homologous…

Q: Given the experimental set up below, and knowing the genes for stalked eyes (st) and black bodies…

A: To determine the distance between the stalk eyed and black bodied we follow following steps:…

Q: Two different female Drosophila were isolated, each heterozygous for the autosomally linked genes…

A: Crossing over refers to the exchange of genetic material in the germ line. During meiosis, the…

Q: In rabbits the dominant allele B produces a black coat color and the recessive genotype bb produces…

A: In the given problem, the genotype BBYY are crossed with bbyy and the progeny obtained, shows BbYy…

Q: In corn, having ligules (L) is dominant to liguleless (l), and green leaves (G) is dominant to white…

A: Alleles are the alternative forms of a gene that are located on the same locus of a homologous…

Q: 1. A heterozygous mouse AAy does not produce enough pigment and it is yellow. Homozygous individuals…

A: Within organisms, many various forms of mutations occur, and depending on the type of mutation, it…

Q: In watermelons, bitter fruit (B) is dominant over sweet fruit (b), and yellow spots (S) are dominant…

A: First we have to determine the genotype of the parents  Homozygous means they have same alleles for…

Q: 40. A scientist is studying insect wing length. An individual from a pure-breeding parental line…

A: The degree of phenotype variable within a population due to genetic variance seen in a certain…

Q: Selected Traits in Cats Trait Dominant Allele Recessive Allele Short hair (H) Long hair (h) Coat…

A: Answers 1. Heterozygous short hair = Hh Heterozygous short hair    x    Heterozygous short hair…

Q: Using the Punnet Square above, make a cross between a PURE YELLOW SEED parent and a PURE GREEN SEED…

A: When a pure yellow seed plant parent plant is crossed with a pure green seed parent plant, then the…

Q: # 9, 10, and 11

A: We’ll answer the first question of the image. Please submit a new question for the other questions…

Q: F1 hybrid is obtained from the following cross: Parent 1: AB/AB; d/d; E/E Parent 2: ab/ab; D/D;…

A: When a trait provides simple dominance, both the homozygous dominant self and the heterozygous…

Q: For linkage analysis, a test cross is used rather than a hybrid cross. Why is this essential? Why…

A: Test cross allows to measure the frequency of gametes indirectly which is made by an individual.…

Knowledge Booster
Biology
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
  • b) You test cross an F1 fish (with genotype BbCc) and obtain 1000 offsprings in F2 generation with the following results: 474 Bbcc, 480 bbCc, 20 BbCc and 26 bbcc.1. Create and fill in a Punnet square for this cross.2. What type of cross is it? 3. Are these loci linked? 4. What are the two parental classes and the two recombinant classes of offspring? 5. What is the percentage of recombination between these two loci? Show your calculations. 6. How many map units apart are they?
    What is a meaning of genetic linkage? How this test is used? Describe the meaning of SNP (single nucleotide polymorphisms) and genetic distance identification which is used in genetic analysis. Knowing that recombination events occur more or less at random along the length of chromosomes, in which case the recombination will occur more frequently between the genes during meiosis: if two genes are closer together two genes are far away from each other there is no impact based on location of two genes. What is a definition of DNA polymorphism and how can this be used for linkage studies? What is a definition of DNA polymorphism and how can this be used for linkage studies?
    Two plants in a cross were each heterozygous for two gene pairs (AB/ab) whose loci are linked and 10 map units (mu) apart. (Recall that 1 mu is equal to 1% recombination between two genes.)   Assuming that crossing over occurs during the formation of both male and female gametes and that the A and B alleles are dominant, determine the phenotypic ratio of their offspring. Part D If the two genes are 15 mu apart and the plant is  (Ab/aB), what proportion of gametes from a signal plant will be ab? Part E What proportion of the offspring of two plants ( both  (Ab/aB)) will be A_B_ if the genes are 15 mu apart? Part F What proportion of the offspring of two plants ( both  (Ab/aB)) will be A_bb if the genes are 15 mu apart? Part G What proportion of the offspring of two plants ( both  (Ab/aB)) will be aaB_ if the genes are 15 mu apart? Part H What proportion of the offspring of two plants ( both  (Ab/aB)) will be aabb if the genes are 15 mu apart? How would I solve these?
  • Genetic cross with dependent assortment (linked traits). Repeat the previous problem but assume that the genes are located very close to each other on the same chromosome, and are therefore always linked (passed on together). Assume that in these individuals, each chromosome contains the dominant allele for one gene and the recessive allele for the other gene. Note: this is similar to the dependent assortment example in your notes, but the linkage is different. Construct a 2x2 Punnett square, and answer the questions below: GgBb x GgBb       GB Gb gB gb GB GGBB GGBb GgBB GgBb Gb GGBb GGbb GgBb Ggbb gB GgBB GgBb ggBB ggBb gb GgBb Ggbb ggBb ggbb   a) From your Punnett square, how many individuals are dihybrids?     b) How many individuals are both homozygous recessive for coat color and heterozygous for eye color (ggBb)?     c) Fill in the blanks to state the expected phenotypic ratio of the offspring:…
    incomplete dominance   What is the phenotype of the plant with RR genotype?  What is the color of a plant with R'R' genotype? What is the color of a plant with genotype RR'? A pink-flowered snapdragon was crossed with a white-flowered snapdragon. What is the probability of producing a pink-flowered plant? What cross will produce the most pink-flowered plants?
    Draw a preliminary linkage map of the three loci. What is their order? (E.g. is the forked locus between yellow and cross-veinless, or outside this region?)  As this is a preliminary linkage map - do not account for double crossovers. You should base the distances on this map off your map distances calculated: yellow and forked: 39.3 mu yellow and cross-veinless: 11.9 mu cross-veinless and forked: 33.6 mu
  • Genetic cross with independent assortment (unlinked traits). Wolves are sometimes observed to have black coats and blue eyes. Assume that these traits are each determined by single genes that are located on different Also assume that normal gray coat color (G) is dominant to black (g) and brown eyes (B) are dominant to blue (b). Suppose that each parent has a normal-colored coat and brown eyes, and that both individuals are heterozygous for both traits. Use the Punnett Square below to answer the following questions:   GgBb x GgBb       GB Gb gB gb GB GGBB GGBb GgBB GgBb Gb GGBb GGbb GgBb Ggbb gB GgBB GgBb ggBB ggBb gb GgBb Ggbb ggBb ggbb     a) From your Punnett square, how many individuals are dihybrids?       b) How many individuals are both homozygous recessive for coat color and heterozygous for eye color (ggBb)?       c) Fill in the blanks to state the expected phenotypic ratio of the offspring:…
    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.
    In autotetraploid Chinese primrose (Primula sinensis L.), the gene controlling stigma color is very near the centromere of the chromosome carrying it. The allele G for green stigma is dominant to g for red stigmas. A homozygous green autotetraploid strain is crossed with a homozygous red autotetraploid strain. What phenotypic ratio of green to red is expected if:  the Fl's are intercrossed? Show your solution.  the Fl's are crossed with red plants? Show your solution.
  • DIHYBRID CROSS: In rabbits, assume that spotted skin (G) is dominant over non-spotted skin (g) and that wooly hair (B) is dominant over nonwooly hair (b). Cross a marriage between a male rabbit with the genotype GGBB with a female rabbit with the genotype ggbb. Show the P1, F1, P2 and F2 generation on a Punnett Square. Give the genotypic and phenotypic ratio of the offspring and the tally of genotype and phenotype of the offspring.
    Consider these two crosses and assume that independent segregation is exhibited by all gene pairs: RrmmTT x RRMmTtFfGg x FfGg Derive the gametic ratio of the second parent in each cross using the branching method. What proportion of the offspring in each cross will be heterozygous for all gene pairs? Derive the genotypic ratio for the offspring from each cross using the branching method. Show complete solutions.
    1)    Two true-breeding varieties of maize, one 11 cm high and the other 47 cm high were crossed and the resultant  F1 hybrids were then crossed to generate the  F2 . In the F2 there were a total of 13,923 plants with a continuous variation in heights between the two extremes and with only 3 plants as large as 47 cm high and 5 plants  of 11 cm high. a) What would be the size and genotype of the F1 from a cross between a true-breeding 11 cm plant and a true-breeding 47 cm plant? b) The F1 from (b) is then crossed to give an F2. What proportion would you expect in the F2 of each extreme phenotype? c) In a cross between a 29cm plant and a 20cm plant what would be the genotypes giving the smallest number of different phenotypes? specify the phenotypes observed.
    • SEE MORE QUESTIONS
    Recommended textbooks for you
  • Human Heredity: Principles and Issues (MindTap Co...
    Biology
    ISBN:9781305251052
    Author:Michael Cummings
    Publisher:Cengage Learning
  • Human Heredity: Principles and Issues (MindTap Co...
    Biology
    ISBN:9781305251052
    Author:Michael Cummings
    Publisher:Cengage Learning