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: In Drosophila, a heterozygous female for the X-linkedrecessive traits a, b, and c was crossed to a…

A: Genetics is a branch of biology that deals with genes, heredity, and variation. Heredity purely…

Q: In Brinjal eggplants, purple fruit is incompletely dominant to white fruit, with the heterozygote…

A: When a white flowering plant is about to make a cross with a purple flowering plant, the resultant…

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: A cross in Drosophila melanogaster involved the recessive X-linked genes for white eye (w), yellow…

A: The genotype expressed by most number of offspring is the parental genotype. Here, + y + and w + ct…

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 genes dumpy (dp), clot (cl), and apterous (ap) are linked on chromosome II of Drosophila. In a…

A: Recombination frequency measures the genetic linkage between a set of alleles/genes and is used to…

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

A: Inversion usually occurs in the prophase 1 in which two break can occur in the area and can thus…

Q: In Drosophila, a heterozygous female for the X-linkedrecessive traits a, b, and c was crossed to a…

A: X-linked recessive inheritance is a genetic condition that can be passed from parent to child…

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: It is assumed that in Drosophila the following genotypes produce phenotypes. َA- B- = Red color A-…

A: Genetics may be a discipline of biology concerned with the study of genes, genetic diversity, and…

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: In Drosophila, a female fly is heterozygous for three mutations, Bar eyes (B), miniature wings (m),…

A: In terms of genetics and genomics, linkage describes how closely genes or other DNA sequences are…

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: Male Drosophila expressing the autosomal recessivemutations sc (scute), ec (echinus), cv…

A: Locus is the specific location of gene in a chromosome. The inheritance of two different characters…

Q: Map distances were determined for four differentgenes (MAT, HIS4, THR4, and LEU2) on chromosome III…

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

Q: what is the approximate map distance between the two genes?

A: Linkage is a phenomenon which determines how genes are placed in close proximity to each other.   It…

Q: 1 II 1 2 a) Assume that colour is controlled by a single sex-influenced gene where green is…

A: a- In second generation female (1) would be red . b- due to cytoplasmic inheritance both would be of…

Q: The mutant genes for vestigial wings and singed bristles are approximately 30 map units apart on…

A: Each gene has two alleles, one is a dominant allele and another is a recessive allele. If the mutant…

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: IN DROSOPHILA, AN X-LINKED RECESSIVE MUTATION, Xm CAUSES MINIATURE WINGS. LIST THE F₂ PHENOTYPIC…

A: The cross involved here is X linked which means that mutation in one of the X chromosomes  in…

Q: In Drosophila, a female with three recessive traits, miniature wings, (m), ebony body (e) and rough…

A: This question is about a genetic problem involving the inheritance of traits in Drosophila flies.…

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: 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: In Drosophila, three autosomal genes have the following map:20 m.u. 10 m.u.a b ca. Provide the data,…

A: Gene mapping is the way in which a genetic map is designed that will use recombination frequency…

Q: A female Drosophila fly is heterozygous for three recessive pigmentation mutations called pl, wh,…

A: Gene expression is a process in which the genetic instructions of genes are utilized to manage…

Q: In Drosophila, red eyes is wild-type and cinnabar eyes are mutant. Wings with crossveins are wild-…

A: In Drosophila, color of eyes are represented as red and  cinnabar in which red eyes is wild and…

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: A female Drosophila with the mutant phenotype 'notched wings' was mated to a wild type male.…

A: Drosophila melanogaster is a fly species that belong to order Diptera. This is also known as fruit…

Q: 1. In Drosophila, bar-shaped eyes (B), scalloped wings (S), crossvein-less wings (W), and eye Color…

A: The phenomenon of crossover is used to describe the order of genes along a chromosome and the…

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…

Q: In Drosophila, an X-linked recessive mutation, Xm causes miniature wings. List the F2 phenotypic…

A: Inheritance patterns are broadly of two types :- autosomal and sex-linked. They are further of two…