n Drosophila, vermilion eye color is due to a recessive allele (v) located on the X chromosome. Curved wings are due to a recessive allele (cu) located on one autosome, and ebony body is due to a recessive allele (e) located on another autosome. A vermilion male is mated to a curved, ebony female, and the F1 males are phenotypically wild-type. If these males were backcrossed to curved, ebony females, what proportion of the F2 offspring will be wild-type males?
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: In Drosophila, the sepia mutation (se, chromosome 3, position 26) results in dark brown eyes, while…
A: Introduction :- D. melanogaster is an ideal model organism due to a variety of characteristics. The…
Q: In Drosophila, a fully heterozygous female with the X-linked recessive genes a, b, and c (not…
A: A fully heterozygous female with x linked gene a, b, c was mated with male a, b, c. Parental cross -…
Q: A geneticist is using a three-point testeross to map three linked Drosophila recessive mutations…
A: Gene mapping is a process through which scientists can evaluate the presence and position of genes…
Q: The production of eye-color pigment in Drosophila requires the dominant allele A. The dominant…
A: Inheritance is defined as the process by which genetic information will be passed or transmitted…
Q: In Drosophila flies, the allele b gives a black body, and the allele b+ gives brown, the wild-type…
A: In drosophila , There are three genes :- Black body b , waxy wings wx and cinnabar eyes cn .While ,…
Q: A geneticist is using a three-point testcross to map three linked Drosophila recessive mutations…
A: If the genes are located on the same chromosome then the crossing over between them will be reduced…
Q: In Drosophila, the genes for body coloration and eye size are on different chromosomes.…
A: A gene is the basic structural and functional unit of life and is composed of DNA(deoxyribonucleic…
Q: A kidney-bean shaped eye is produced by a recessive gene, k, on the third chromosome of Drosophila.…
A: "Genetic variation" is the result of the recombination of genetic material during the inheritance…
Q: Eye color in Drosophila is determined by a gene is on the X chromosome, with the red-eye allele…
A: Each gene possesses two forms of alleles. These forms include a dominant allele and a recessive…
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: A female Drosophila fly is heterozygous for three recessive pigmentation mutations called pk, bk,…
A: Gene expression is a process in which the genetic instructions of genes are utilized to manage…
Q: .In Drosophila, gray body color is dominant over ebony body color, while long wings are dominant…
A: answer given below Dominant Traits…
Q: White eye color is a recessive sex-linked trait in fruit flies. If a whiteeyed Drosophila female is…
A: Genes are the hereditary unit of an organism. The DNA (deoxyribonucleic acid) forms the genes. DNA…
Q: Write the genotype(s) of the flies in each generation. Use a low dash (e.g. A_ B_) to indicate…
A: Given Both have fruitflies are taken from different strains. Strain A = bright red eye Strain B =…
Q: A mutation of Drosophila has a wing condition known as beaded. When a beaded fly was crossed with a…
A: The wildtype flies have long and full wings. The mutated flies have beaded wings that can be due to…
Q: A geneticist is using a three-point testcross to map three linked Drosophila recessive mutations…
A: Testcross progeny phenotype Number Crossover Curved 281 Parental Anomalous, Buckled 279…
Q: In Drosophila, the allele for brown eyes (b) is recessive, while the red eye allele (B) is dominant.…
A: Dominant traits Red eye - B Normal body - E Recessive traits brown eye - b ebony body - e The…
Q: In Drosophila, two mutations, Stubble (Sb) and curled (cu), are linked on chromosome III. Stubble is…
A: Dominant genes are those genes whose trait or phenotype will be expressed. Recessive gene is the…
Q: Another recessive mutation in Drosophila, ebony (e), is on anautosome (chromosome 3) and causes…
A: The scalloped wing phenotype is produced due to a recessive mutation in the X chromosome. The…
Q: Miniature wings (Xm) in Drosophila result from an X-linked allele that is recessive to the allele…
A: Given: Miniature wings Xm - recessive Long wings X+ - dominant Male parent - long wings Female…
Q: Vermillion eye color in Drosophila is a sex-linked recessive trait. What phenotype would be found in…
A:
Q: n Drosophila, gray body color is dominant over ebony body color, while long wings are dominant over…
A: answer is given below...
Q: In flies, assume black (B) is dominant and green (b) is recessive for abdomen color, and straight…
A: A genetic map displays the map distance (in cM) between any two loci as well as the position of…
Q: One of the X chromosomes in a particular Drosophila female had a normal order of genes but carried…
A: To determine : a. Why are there no male offspring with the allele combinations y v f+, v+ v+ f, y v+…
Q: In Drosophila, gray body color is dominant to ebony body color, while long wings are dominant to…
A: Genotype is defined as the complete set of genes present in the individual and the information of…
Q: You cross a fly with straight wings with a fly with curved wings to produce the F1 generation, all…
A: In genetics, dominance refers to the phenomenon of one gene variant (allele) on one copy of a…
Q: Drosophila eye color is determined by a single gene. Supposed you collect a population of drosophila…
A: Inheritance patterns are of different type’s Mendelian inheritance, incomplete dominance,…
Q: In Drosophila, gray body color is dominant to ebony body color, while long wings are dominant to…
A: Drosophila study experiments Gray body colour - dominant -E Ebony body colour- recessive- e long…
Q: If a Drosophila female that is homozygous for an X-linked recessive mutation is bred with a male…
A: All the male offspring who will get their X chromosome from their mother will show mutant phenotype.…
Q: A wild-type male and a wild-type female Drosophila with red eyes and full wings are crossed. Their…
A: Genetics, the study of heredity generally and of genes particularly. genetics forms one in every one…
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: In the fruit fly, Drosophila melanogaster, a spineless (no wing bristles) female fly is mated to a…
A: Formulas for three point test cross - A. Distance between two genes = (#progenies obtained by SCO…
Q: In C. elegans, lon-2 and unc-2 are recessive mutations that are 8 map units apart on the X…
A: A map unit is defined as the distance between two linked gene pairs where 1% of the products of…
Q: In Drosophila melanogaster, cinnabar eye (cn) and vestigial wing (vg) are simple recessive traits. A…
A: Cinnabar eyes = cncnv+v+ Vestigial wings = cn+cn+vv Test cross parent = cncnvv (cinnabar and…
Q: Vermillion eye color in Drosophila sp. is a sex-linked recessive trait. What phenotype would be…
A: Considering XvXV as Vermilion eye coloured female the crossing is given as follows. The phenotype…
Q: In the fruit fly, dumpy wings (d) and purple eyes (p) are encoded by mutant alleles that are…
A: The two genes are involved in this case. The wings and eye encoding genes are involved here. The…
Q: The testcross of a trihybrid Drosophila female with a homozygous recessive male (three-point…
A: 8 different phenotypes
Q: In Drosophila flies, the allele b gives a black body, and the allele b+ gives brown, the wild-type…
A: Genes are the hereditary units of life. The genes can be linked or may not be linked. When two…
Q: In Drosophila, the genes for eye color, wing shape, and wing length are located on chromosome II.…
A: It is given that the Purple eyes (pr), arc bent wings (a), and vestigial wings (vg) are the mutant…
Q: What are the F1 phenotypes expected from a cross between a heterozygous red-eyed female fruit fly…
A: The genotype of female parent fruit fly is given XWXw The genotype of male parent fruit fly is…
Q: A female from a pure-breeding strain of Drosophila with vermillion-colored eyes is crossed with a…
A: The genes are the hereditary unit of an organism which are passed on from the parental generation to…
Q: The genes for mahogany eyes and ebony body are approximately 18 map units apart on chromosome III in…
A: In Drosophila + indicates wild-type allele for any gene, m = mahogany e = ebony.Female parents are…
Q: A kidney-bean shaped eye is produced by a recessive gene, k, on the third chromosome of Drosophila.…
A: If the genes are located on the same chromosome then they are considered as linked genes and they…
Q: n Drosophila, singed bristles (sn) and cut wings (ct) are both caused by recessive, X-linked…
A: Mapping deals with sequence, in which genes appear on a chromosome and their distance apart. Mapping…
Q: In elegans, lon-2 and unc-2 are recessive mutations that are 8 map units apart on the X chromosome.…
A: A map unit is defined as the distance between two linked gene pairs where 1% of the products of…
Q: In Drosophila melanogaster, a yellow-bodied (dark coloured) male with vestigial (underformed) wings…
A: Drosophila malenogaster is a fruit fly from family drosophilidae.
Q: The genes for the recessive traits of mahogany eyes and ebony body are approximately 30 map units…
A: Given- Recessive traits of mahogany eyes and ebony body are 30 map units apart. Both traits are…
In Drosophila, vermilion eye color is due to a recessive allele (v) located on the X chromosome. Curved wings are due to a recessive allele (cu) located on one autosome, and ebony body is due to a recessive allele (e) located on another autosome. A vermilion male is mated to a curved, ebony female, and the F1 males are
![](/static/compass_v2/shared-icons/check-mark.png)
Trending now
This is a popular solution!
Step by step
Solved in 3 steps
![Blurred answer](/static/compass_v2/solution-images/blurred-answer.jpg)
- In Drosophila, males from a true-breeding stock with raspberry-colored eyes (instead of normal brownish-red eyes) were mated to females from a true-breeding stock with sable- colored bodies (instead of normal brown bodies). In the F, generation, all the females had wild-type eye and body color, while all the males had wild-type eye color but sable-colored bodies. When F, males and females were mated, the F generation was composed of: 216 females with wild-type eyes and bodies 223 females with wild-type eyes and sable bodies 191 males with wild-type eyes and sable bodies 188 males with raspberry eyes and wild-type bodies 23 males with wild-type eyes and bodies 27 males with raspberry eyes and sable bodies. Explain these results by diagramming the crosses and calculating any relevant map distances.In Drosophila, ebony body colour is produced by a recessive gene a and wild-type (gray) body colour by its dominant allele a+. Vestigial wings are governed by a recessive gene vg, and normal wing size (wild type) by its dominant allele vg+. If wild-type dihybrid flies are crossed and produce 256 progeny, how many of these progeny flies are expected in each phenotypic class?In Drosophila, the sepia mutation (se, chromosome 3, position 26) results in dark brown eyes, while cinnabar (cn, chromosome 2, position 57.5) results in bright orange-red eyes. True breeding, wild type females are mated with true breeding males homozygous recessive for both traits. Using Drosophila notation, diagram the P1 and F1 crosses. P1 F1 Fill in the chart with phenotypic ratios that would be expected in the F2 generation. Use the space provided to show your work. Phenotype Females Males Overall (♀and ♂) =1 =1
- In Drosophila fruit flies, the genes for warped wings (dwp), rumpled bristles (rmp), and pallid wings (pld) are linked. A trihybrid female for all three allleles is crossed with homozygous recessive male for all three alleles and the offspring obtained showed the following phenotypes: 3 pld rmp dwp 428 pld rmp + 427 + + dwp 48 + rmp + 47 pld + dwp 23 pld + + 2 + + + 22 + rmp dwp What is the order and map distance between these three alleles?IN DROSOPHILA, AN X-LINKED RECESSIVE MUTATION, Xm CAUSES MINIATURE WINGS. LIST THE F₂ PHENOTYPIC RATIOS IF: A MINIATURE-WINGED FEMALE IS CROSSED WITH A NORMAL MALE AND A MINIATURE-WINGED MALE IS ● ● CROSSED WITH A NORMAL FEMALE. WHAT WOULD THE PHENOTYPIC RATIO FROM (A) BE IF THE MINIATURE- WINGED GENE WERE AUTOSOMAL? ASSUME IN ALL CASES THAT THE P1 INDIVIDUALS ARE TRUE-BREEDING.Vermillion eye color in Drosophila sp. is a sex-linked recessive trait. What phenotype would be found in this progeny of a cross between a vermillion female and a wild type male?
- In Drosophila melanogaster white (w) and miniature (m) wings are controlled by X-linked recessive genes with a recombination fruequency between them of approximately 38%. Show the sexes, phenotypes and proportions of offspring expected from the following mating:a. ++/wm female X wm maleb. +m/w+ female X w+ malec. w+/+m female X ++ maleIf we assume that white eyes and miniature wings are not x-linked but are linkedto the autosomal genes, what phenotypic frequencies would you expect from this cross: ++/wm female X ++/wm male?In Drosophila melanogaster, red eyes are dominant over white and the variation for this characteristic is on the X chromosome. Vestigial wings (v) are recessive to normal (V) for an autosomal gene. Predict the appearance of offspring of the following crosses: XW/XwV/v×Xw/Y v/v, Xw/XwV/v×XW/Y V/v.In Drosophila, a cross was made between females expressing thethree X-linked recessive traits, scute bristles (sc), sable body (s),and vermilion eyes (v), and wild-type males. All females were wildtype in the F1, while all males expressed all three mutant traits.The cross was carried to the F2 generation and 1000 offspringwere counted, with the results shown in the following table. Nodetermination of sex was made in the F2 data. Question:Calculate the coefficient of coincidence; does this represent positive or negative interference? Phenotype Offspringsc s v 314+ + + 280+ s v 150sc + + 156sc + v 46+ s + 30sc s + 10+ + v 14
- Part 2 Spotty and Cutie have puppies and 50% of the puppies are unaffected for both traits (not blind and not BHFD). What is Spotty's genotype? bbDD bbdd BBDd BbDd BbDD BBddIn Drosophila melanogaster, red eyes are dominant over white and the variation for this characteristic is on the X chromosome. Vestigial wings (v) are recessive to normal (V) for an autosomal gene. Predict the appearance of offspring of the following crosses: XW/Xw V/v×Xw/Y v/v, Xw/Xw V/v × XW/Y V/v.Vestigial wing is a recessive autosomal mutation in the fruit fly Drosophila melanogaster. Wild-type flies have red eyes, but another mutation, an X-linked recessive mutation causes white eyes. You cross a parental generation of males with vestigial wings with females that have white eyes. 1) What phenotypic ratio would you expect in the F1 generation from such a cross? What phenotypes do you observe in these flies? (e.g. males with red eyes and wild-type wings). 2) What phenotypic ratio would you expect in the F2 generation? What phenotypes do you observe in these flies?
![BIOLOGY:CONCEPTS+APPL.(LOOSELEAF)](https://www.bartleby.com/isbn_cover_images/9781305967359/9781305967359_smallCoverImage.gif)
![BIOLOGY:CONCEPTS+APPL.(LOOSELEAF)](https://www.bartleby.com/isbn_cover_images/9781305967359/9781305967359_smallCoverImage.gif)