a mutant screen in Drosophila, you identified a gene related to memory, as evidenced by the inability of recessive homozygotes to learn to associate a particular scent with the availability of food. Given another line of flies with an autosomal mutation that produces orange eyes, design a series of crosses to determine the map distance between these two loci. You do not need to calculate recombination frequency.

Q: One of the X chromosomes in a particular Drosophila female had a normal order of genes but carried…

A: Crossing over: It occurs during prophase I and involves the exchange of genetic material between…

Q: A rosy-eyed Drosophila was crossed with a forked bristle Drosophila. The F1 were all wild-type while…

A: The correct answer is b) RrFf x RrFf. Here's how we can arrive at this conclusion:Analysis of the…

Q: Consider two loci A and B that are 30 cM apart on chromosome 1 in the fruit fly. A paracentric…

A: There are two types of inversions. The paracentric and pericentric. In a paracentric inversion,…

Q: n a certain plant, the dominant form of gene P codes for purple flowers while the recessive form…

A: Gregor Mendel discovered the fundamental doctrines of inheritance through his study of pea plants.…

Q: Inversions are known to affect crossing-over. The following homologs have the indicated order (the…

A: Insertion, deletion, substitution, and inversion are the four types of mutations. Insertion is a…

Q: Alleles of genes A and B were analyzed in Neurospora according to the cross shown below. Ordered…

A: The four haploid cells are produced by the process of meiosis and three kinds of patterns of growth…

Q: In Drosophila the genes A B D are linked.  You cross a strain that is homozygous for d with a strain…

A:

Q: In D. melanogaster, reduced bristles (rd), cinnabar eyes (cn), and vestigial wings (vg) are…

A: Introduction: Drosophila melanogaster is a species of fly in the family Drosophilidae. The species…

Q: Calculate the mutation rates at the roughoid locus for the control group and the two groups of…

A: Introduction  Radiation: this is the form of energy which is emitted out by the radioactive…

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 wild-type (normal) fruit fly, Drosophila melanogaster, has straight wings and long bristles.…

A: Wild type fruit fly Drosophila melanogaster posses straight wings and a long bristles. The mutant…

Q: In corn, male sterility is controlled by maternal cytoplasmic elements. This phenotype renders the…

A: Hi dear, here's your answer what you want. Can you please give me an upvote for this answer.

Q: were observed and used to make a map of these genes.  Calculate the interference.…

A: Answer. The linkage of the genes in a chromosome can be in the form of a genetic map or linkage map.…

Q: Branch length in the plant Karlheinz rummeniggeus is under polygenic control. The phenotype exhibits…

A: The polygenic trait or characteristics is controlled by more than one genes. In this case multiple…

Q: Consider the first category of test-cross offspring shown in figure 8.2 (+b, LS). Consider also that…

A: In the test-cross in question, heterozygous female flies with the genotype +b, LS were used. In…

Q: Cinnabar eyes (cn) and reduced bristles (rd) are linked autosomal recesive characters in Drosophila…

A: According to the question, The given cross is, cn+cn+rd+rd+ (wild type female) X   cncnrdrd (reduced…

Q: In an autotetraploid organism, the gene controlling coat color is very near the centromere of the…

A: Autotetraploid Organisms --- Autotetraploidy -- It is defined as individual or strain whose…

Q: In an electrophoretic gel across which is applied a powerful electrical alternating pulsed field,…

A: SDS-PAGE (Sodium Dodecyl Sulphate-Polyacrylamide Gel Electrophoresis) is a quantitative method to…

Q: A cross between yeast strains ab x AB produces the following unordered tetrad a. Label each group of…

A: Tetrad analysis is a powerful tool for studying genetic linkage and recombination in yeast. By…

Q: In Drosophila, the wildtype eye color is black. In the laboratory, you screened for mutants than…

A: Based on the information provided, the most likely conclusion is:E. The two mutations complemented,…

Q: 4) You design Drosophila crosses to provide recombination data for gene (A), which is located…

A: The location of genes on a particular chromosome can be determined on the basis of recombination…

Q: Draw a preliminary linkage map of the three loci. What is their order? (E.g. is the forked locus…

A: A genetic map is a linkage map of a species or experimental population that shows the position of…

Q: Consider three genes on the same chromosome, Gene A, Gene B and Gene C. You perform three factor…

A: As 3 genes are located on the same chromosome then the crossing over event is very rare.

Q: the white-eyed w+ gene from one end of the X chromosome locus (w) moves the to a location nearer to…

A: This is an example of epigenetic modification. It alters the gene expression pattern.

Q: The genome of Drosophila has been studied extensively using the technique of gene mapping. In…

A: A measure of the probability that two genetic loci (positions on a chromosome) will be inherited…

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

A: G gene coded for green  stigma  g gene coded for red stigma   GG = homozygous dominant = green  Gg…

Q: A yeast geneticist irradiates haploid cells of a strain thatis an adenine-requiring auxotrophic…

A: A mutant strain that isn't able to grow on a minimal medium and requires some specific supplements…

Q: The normal sequence of markers on a certain Drosophila chromosome is ABCDE*FGHIJK, where the…

A: please find your answer in step2:

Q: Here are the results obtained by Bridges and Morgan for crossing over analysis between black,…

A: The complete map of genes in a chromosome is called as the genetic map. It is also called chromosome…

Q: You are given a Drosophila female that looks wild-type but is heterozygous for mutations in tan body…

A: Three-point cross: In genetics, the three-point cross is used to determine the distance between two…

Q: What gene is in the middle?

A: The genotypes found most frequently are the parental genotypes. Hence parents are: + + cn and b wx +…

Q: In yeast, LYS5, ADE1, and URA2 are genes required to synthesize lysine, adenine and uracil,…

A: Given:MATa lys5 ADE1 URA2 haploid mated with MATa LYS5 ade1 ura2 haploid.Resulting triply…

Q: Vestigial wing is a recessive autosomal mutation in the fruit fly Drosophila melanogaster. Wild-type…

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

Q: Consider the first category of test-cross offspring shown in figure 8.2 (+b, LS). Consider also that…

A: In the test-cross in question, heterozygous female flies with the genotype +b, LS were used. In…

Q: n corn, male sterility is controlled by maternal cytoplasmic elements. This phenotype renders the…

A: Hi dear, here's your answer what you want. Can you please give me an upvote for this answer.

Q: The wild-type (normal) fruit fly, Drosophila melanogaster, has straight wings and long bristles.…

A: Introduction Gene is known as hereditary factor which controls all the characters in living organism…

Q: The mutations called bobbed in Drosophila result from variable reductions (deletions) in the number…

A: Mutations known as bobbed results from varied deletions in the number of amplified rRNA coding…

Q: QUESTION 11 The location of five deletions have been mapped to a Drosophila chromosome, as shown in…

A: To determine the order of the genes (a-e) on the chromosome, we can analyze the complementation…

Q: Identity gene 1 (bl, pr, vg) Identity gene 2 ( bl, pr, vg) Identity gene 3 ( bl,pr, vg) How many map…

A: The three point test cross is used in this table. The greater numbers are parental progenies. The…