In Drosophila, a heterozygous female for the X-linkedrecessive traits a, b, and c was crossed to a male that phenotypically expressed a, b, and c. The offspring occurred inthe following phenotypic ratios.+  b  c                            460a  +  +                           450a  b  c                              32+ + +                              38a  + c                              11+ b +                               9 No other phenotypes were observed.(a) What progeny phenotypes are missing? Why?

Q: The Drosophila gene Sex lethal (Sxl) is deserving of itsname. Certain alleles have no effect on XY…

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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: 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: . A white-eyed female Drosophila is mated with a redeyed (wild-type) male, the reciprocal cross of…

A: Dominant and recessive traits exist when a trait has two different forms at the gene level. The…

Q: aternal effect gene in Drosophila, called torso, is found as a recessive allele that prevents the…

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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: The phenotype of vestigial (short) wings (vg) in Drosophila melanogaster is caused by a recessive…

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Q: I. Male Drosophila from a true-breeding wild-typestock were irradiated with X-rays and then mated…

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A: Maternal effect genes are the ones that are contributed to the egg by females.

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: 3.13 In Drosophila, the mutant allele bwdts causing brown eyes (normal eyes are red) is temperature…

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Q: In Drosophila, Dichaete (D) is a mutation on chromosome III with a dominant effect on wing shape. It…

A: Interlocus distance refers to the distance between two genes on a chromosome. In order to determine…

Q: A Drosophila male is heterozygous for a reciprocaltranslocation between an autosome and the Y…

A: Chromosomal translocation is the abnormal condition of chromosomes with unusual rearrangement. It…

Q: A maternal effect gene in Drosophila, called torso, occurs as a functionalallele (torso+) and a…

A: Drosophila consist of acorn-head-thorax-abdomen-telson part.

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Q: The Drosophila fruit fly genes ebony (e) and claret (ca) are linked on chromosome 3. In Drosophila,…

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Q: 3.13 In Drosophila, the mutant allele bwdis causing brown eyes (normal eyes are red) is temperature…

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Q: The a, b, and c loci are all on different chromosomesin yeast. When a b+ yeast were crossed to a+ b…

A: Step: 1 Yeast is a member of the phylum Ascomycota of the kingdom fungi. These are commonly known as…

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Q: heterozygous female and  a recessive male. From the offspring, backcross the recessive female with…

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Q: In drosophila, a recessive mutation (m-) of a maternal effect gene results in an abnormal phenotype…

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Q: In Drosophila, Dichaete (D) is a mutation on chromosome III with a dominant effect on wing shape. It…

A: Since you have asked multiple question, we will solve the first question for you. If you want any…

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…

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Q: Female fruit flies homozygous for the X-linked white-eye alleleare crossed to males with red eyes.…

A: Drosophila melanogaster is a common fruit fly. It is most common subject used in majority of genetic…

Q: In Drosophila, males from a true-breeding stock withraspberry-colored eyes were mated to females…

A: Recombination frequency (RF) is the rate of occurrence of recombination between a pair of linked…

Q: In a vial of Drosophila, a research student noticedseveral female flies (but no male flies) with bag…

A: Fertilization is the process by which the male gamete, sperm, fertilize with the female gamete,…

Q: mutant females with wild-type males, or (ii) mutant males with wild-type females, or (iii) both…

A: A test cross is a cross between a homozygous recessive individual with a heterozygous individual.…

Q: In a cross in Drosophila involving the X-linked recessive eye mutationwhite and the autosomally…

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Q: The recessive, X-linked z1mutation of the Drosophilagene zeste (z) can produce a yellow (zeste) eye…

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Q: Drosophila P elements were discovered because ofa phenomenon called hybrid dysgenesis—sterilityof…

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Q: Duchenne muscular dystrophy is a recessive disorder caused by a rare,loss-of-function allele that is…

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Q: a. In Drosophila, crosses between F1 heterozygotes ofthe form A b / a B always yield the same ratio…

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Q: Researchers discovered recently that the sole functionof the SRY protein is to activate an autosomal…

A: Sex-determining region of Y (SRY) is responsible for maleness in males. Mutation in the SRY region…

Q: . Chromosome 3 of corn carries three loci (b for plant-color booster, v for virescent, and lg for…

A: Testcross is a cross between an individual with homozygous recessive genotype. It aids in…

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

A: A dihybrid cross with unlinked markers should produce a 1:1:1:1 ratio, according to Mendel's…

Q: Three recessive mutations in Drosophila melanogaster, roughoid (ru, small rough eyes), javelin (jv,…

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Q: The genes dumpy wings (dp), clot eyes (cl), and apterous wings (ap) are linked on chromosome II of…

A: A genetic map is a type of chromosome map that shows the relative locations of genes and other…

Q: . In mice, the dominant allele Gs of the X-linked geneGreasy produces shiny fur, while the recessive…

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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: In Drosophila, a cross was made between females expressing thethree X-linked recessive traits, scute…

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

Q: In Drosophila, the autosomal recessive dp allele ofthe dumpy gene produces short, curved wings,…

A: Since you have posted a question with multiple sub-parts, we are answering only first two for you.…

Q: Miniature wings in Drosophila melanogaster are due to an X-linked gene (Xm) that is recessive to an…

A: It is given that alleles for the trait for miniature wings (Xm) in Drosophila melanogaster are…

Q: In Drosophila, the genes for withered wings (whd), smooth abdomen (sm) and speck body (sp) are…

A: To calculate the expected number of double crossover, we have to use the product rule. The product…

Q: In Drosophila, the two mutations Stubble bristles (Sb) and curledwings (cu) are linked on chromosome…

A: Introduction: Chromosomes are the vehicles of genetic information. Mendelian genetics and gene…

Q: Miniature wings in Drosophila result from an X-linked allele (Xm) that is recessive to the allele…

A: If the X chromosome is to autosome pair ratio in the Drosophila is 1, the fly would be female. If…

Q: Miniature wings in Drosophila result from an X-linked allele (Xm) that is recessive to the allele…

A: The X-linked inheritance is the transfer of X-chromosome from one generation to another. In females,…

Q: In the fruit fly Drosophila melanogaster, the following genes and mutations are known:Wing size:…

A: Gene: Genes are genetic material that passes from parents to progeny. The dominant allele can…

Q: A new recessive mutant allele doesn’t show pseudodominance with any of the deletions that span…

A: Pseudodominance is defined as the sudden appearance of the phenotype of a recessive gene in a…

Q: . The production of pigment in the outer layer of seedsof corn requires each of the three…

A: Let Pr be purple, pr be red and acr be yellow. Part A. The phenotype of parent  P1 = AA CC RR prpr…