Genes a, b, and c are linked, and pairwise crosses gave the following distances: a-b 20 cM b-c 2 cM a-c 22 cM Which gene is in the middle? It's not possible to tell without additional information.

Q: If there are three genes and you want to determine the distance between these genes, what are you…

A: Recombination frequency is used as a quantitative measure of the distance between two genes in a…

Q: Could there be any significance to the fact that the crosses concern genes on a very small…

A: DNA is the genetic material in most living organisms. It is the information hub of the cell that…

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.…

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

A: Gene mapping signifies the determination of the locations of the components in a genome with…

Q: If 2 spot (S) is dominant to 4 spot (s), give the genotypes for the parents in the following…

A: Different versions of a gene are called alleles.  Alleles are described as either dominant or…

Q: In a species of rat, the map unit distance between genes A, B, C and D were as follows: (in the…

A: There are 4 genes : A , B , C , D in the species of rat. Basically ,  Map unit or m.u or cM is the…

Q: The alleles his-5 and lys-1, found in yeast, result in cells that require histidine and lysine for…

A: "Genetics" is the study of the functioning and main codes of variation and heredity. Inheritance is…

Q: In a cross of a h-r+ X h+r-, the following progeny were produced: 25 h-r+ 23 h+r- 7 h+r+ 5 h-r-…

A: The genetic distance between two genes is calculated by : (recombinant progenies/ Total number of…

Q: A cross between fruit files with genotypes Aa Bb × aa bb produces the following progeny: 10 Aa Bb…

A: Linkage is a phenomenon in which how genes are placed in close proximity to each other but in the…

Q: For a given cross, the expected number of double recombinants is 18 and the observed number of…

A: The measure of genetic linkage is termed as recombination frequency, which is used in the…

Q: Which of the following can explain the observation that two pureline mutants both showing identical…

A: A mutation is a change in the structure of a gene, the unit of heredity. Genes are made of…

Q: What is the most likely order of the linked genes R, S, and T if the distance between R and S is 22…

A: The above scenario based on linkage and maping.

Q: What is a gene with only one common, wild-type allele?

A: The coding region of the gene is known as allele. Wild-type alleles are the original form of the…

Q: In a two factor cross, the longest possible map distance is 50 map units.  Explain why this is…

A: By finding the recombination frequencies of many gene pairs, we can make genetic or linkage maps. By…

Q: From a series of two-point crosses, the following mapdistances were obtained for the syntenic genes…

A: Since you have posted a question with multiple sub-parts, we will solve first three sub-parts for…

Q: In a study of several characters, it was found that when di-hybrid crosses were made, several genes…

A: A genetic map is a chromosome map that depicts the relative positions of genes and other significant…

Q: What will be the results of the following crosses, where N is black, n is brown, L is short hair and…

A: A dihybrid cross represents the combination of two species that are hybrid in two ways. A…

Q: How can the product rule be used to predict the results of crosses in which multiple genes are…

A: Sir Gregor Mendel was a priest and a teacher who did the famous hybridization experiment on garden…

Q: For two genes that are genetically unlinked but physically linked because they are on the same…

A: Two genes are said to be genetically unlinked when they assort independently. The genetically…

Q: In a series of two-point map crosses involving five genes locatedon chromosome II in Drosophila, the…

A: There are five genes in Drosophila's chromosome II and the crosses yield offspring with different…

Q: You collected the following results from a test-cross you set-up using fruit flies. 52 wildtype…

A: Fruit flies ( Drosophila ) are test crossed with each other .  Results obtained are :-  A ) Wild…

Q: A female animal with genotype A/a ⋅ B/b is crossed with a double-recessive male (a/a ⋅ b/b). Their…

A: The inheritance doesn’t always follow patterns explained by mendelian laws. It is important to…

Q: An ear of corn has a total of 381 grains, including 216 Purple & Smooth, 79 Purple & Shrunken, 65…

A: Answer: DIHYBRID CROSS = It is a cross between two traits of a same species reproducing progeny at…

Q: You cross two plants and get the following results: Recombinant progeny type A: 43 Recombinant…

A: Crossing over is the exchange of genetic material between non sister chromatid of chromosome causes…

Q: in the following pedigree, how close in genetic distance (cM) is SSLP-g86 to thể disease allele?…

A: A pedigree chart of family usually depicts the traits of linkage or recombination that descends down…

Q: Assume that you have a garden and some pea plants have solid leaves and others have striped leaves.…

A: The DNA (deoxyribonucleic acid) is the hereditary form of an organism that is passed on by the…

Q: You are studying 5 genes: a, b, c, d, and e. In an attempt to map them, you perform a series of…

A: If the genes are located on the same chromosome then the crossing over between them will be reduced.…

Q: To build a genetic map, how many types of crosses will be required to perform if you have three…

A: A genetic map is based on the concept of genetic linkage: the closer two markers are on a…

Q: An individual has the following reciprocal translocation:What would be the outcome of alternate…

A: Chromosomes are long thread-like structures that carry coded genetic information in the form of DNA.…

Q: in a cross AaBb X aabb, the following progeny were obtained: AaBb=50 aabb=46 Aabb=7 aaBb=6  What is…

A: Linkage is defined as occurrence of two or more than two genes on the same chromosomes. The genes…

Q: What is the difference between genes in coupling configuration and genes in repulsion? How does the…

A: Coupling and repulsion terms are used in recombination. In coupling, the percentage of double…

Q: Can you explain genetic map with two point cross? And show me a example with the cross

A: Genetic map use to create by using information obtain through series of test cross. A cross between…

Q: A cross between two heterozygous individuals in one gene resulted in one phenotype, explain?

A: Sir Gregor Mendel was a priest and a teacher who did the famous hybridization experiment on garden…

Q: Consider the following cross involving three linked genes DeF/dEf x def/def. PHENOTYPES NUMBER…

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

Q: Strain A Strain B BB bb A a Virescent Virescent F1 NOT FOR A Virescent

A: The female strain of barley with genotype BB is virescent While the strain B male with genotype Bb…

Q: The A locus and the D locus are so tightly linked that norecombination is ever observed between…

A: Introduction  Genes can be linked or autonomous. When they segregate during the time of formation,…

Q: . A corn geneticist has three pure lines of genotypes a/a ; B/B ; C/C, A/A ; b/b ; C/C, and A/A ;…

A: Genetics is a part of science that deals with the investigation of genes, genetic variation, and…

Q: letter B: If the map distance equals the number of recombinant/total of offspring, wouldn't it be…

A: Gene distance The distance between two different gene located on the same chromosomes.

Q: A cross between fruit files with genotypes Aa Bb × aa bb produces the following progeny: 10 Aa Bb…

A: In a cross, the arrangement of linked alleles on the chromosomes is critical for determining the…

Q: What is the most likely order of the linked genes R, S, and T if the distance between R and S is 22…

A: A gene is the basic physical and the functional unit of heredity. Genes are made up of the DNA. Some…

Q: What do you call the two new allele combinations generated from the cross over?    A. linker B.…

A: Meiosis is defined as a type of cell division where a single cell undergoes cell division twice and…

Q: The pedigree below shows that inheritance of a disease that is caused by a late onset, dominant,…

A: * Given that  pedigree shows that inheritance of a disease caused by late onset and it is  dominant…

Q: he recombination frequency in a cross can never exceed 50%. Explain why is this limit?

A: Answer When genes are present on separate chromosomes or far apart they assort independently during…

Q: barley, a self-fertilizing species that can be cross-fertilized, two true-breeding strains with…

A: Reciprocal cross is done where different parental types are used both as a maternal form and as a…

Q: If a crossover began in the short region between gene A and the tip of the chromosome, would this…

A: DNA is the genetic material in most living organisms. It is the information hub of the cell that…

Q: Why are some crosses not performed in a complementation matrix?

A: Complementation is the capacity of 2 mutants in combination to reinstate the normal phenotype. The…

Q: Can you explain a genetic map with the three point testcross

A: A genetic map is a special kind of chromosome map that depicts the relative positions of genes and…

Q: If the map distance between genes A and B is 10 map units and the map distance between genes B and C…

A: Map distance is defined as the distance between two genes loci present on a chromosome. It is…

Q: If a plant with yellow, wrinkled seeds was crossed with a plant with gr seeds, which of the…

A: rr is showing the allele for the wrinkled. RR is showing the allele for the round. YY is for the…

Q: A three-point cross was conducted, 8500 progeny were evaluated, and the genetic map was determined…

A: The genes that are located on the same chromosome will shows reduce amount of crossing over. In case…

Mitochondrial Mutations

A mitochondrion is a cellular organelle that serves as the site for cellular respiration and energy production (ATP or Adenosine Triphosphate). It is a double-membrane-bound organelle and is only present in eukaryotic cells.