A Drosophila fly heterozygous for alleles for black body, dumpy wings, and purple eyes but phenotypically wi was test-crossed to a fly that was homozygous recessive for all three genes. The genes are all on the same chromosome. The offspring had the following phenotypes in the following numbers: Phenotype. No. of offspring Wild type 225 Black body, purple eyes, dumpy wings 238 dumpy wings 122 black body, purple eyes 135 black body, dumpy wings 15 purple eyes 19 purple eyes, dumpy wings 6 black body What's the recombinations rate between black body and dumpy wings in m.u. (map units)? For vou answer, c

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: 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, 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: Let’s suppose that a gene affecting pigmentation is found on the Xchromosome (in mammals or insects)…

A: Introduction  The total chromosomes in the body are divided into two groups: Autosomes…

Q: In pigs, the dominant C allele produces a curly tail. c/c homozygotes have straight tails. The…

A: In this question, we are given two genes, C and W which are present on the same chromosome. C gene…

Q: In fruit flies, red eyes (pr+_) are dominant to purple eyes (prpr) and normal wings (vg+_) are…

A: If two genes are located on the same chromosome then they are known as linked genes. In this…

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

A: It is given that the vestigial wing and hairy body are caused by recessive wings. These are encoded…

Q: Tomato Plants In tomato plants, round fruit (R) is dominant to oval fruit (r). Pure breeding plants…

A: Given that, allele R is dominant over allele r where R represents the allele for round shape and r…

Q: The parental genotypes for a series of crosses are wild-type male fruit flies mated to females with…

A: Drosophila melanogaster is a small, common fly found near ripe and rotten fruit. It has been used…

Q: What are the modes of inheritance of singed and purple? Explain your reasoning.

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

Q: In lizards, the mutants green skin (g) and flaky legs (f) are both recessive and assort…

A: The chi-square analysis was utilized to test that alleles that are segregating based on Mendelian…

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

A: a) In tetrad analysis, three types of tetrads are obtained:    Tetratypes= T = 363    Non-parental…

Q: In corn, the genes for tassel length (alleles T and t) andrust resistance (alleles R and r) are…

A: a. What key features of the data are different from the expected results? Data infer close linkage…

Q: Let’s suppose that a gene affecting pigmentation is found on the Xchromosome (in mammals or insects)…

A: Genes are the basic structural and functional unit of heredity. They carry coded genetic information…

Q: Two recessive traits in mice—droopy ears and flaky tail—arecaused by genes that are located 6 mu…

A: The genes for the recessive traits – droopy eyes (de) and flaky tail (ft) are located 6 map units…

Q: . In the tiny model plant Arabidopsis, the recessive allele hyg confers seed resistance to the drug…

A: Model plant = Arabidopsis The recessive allele conferring seed resistance to the hygromycin = hyg…

Q: Tomato Plants In tomato plants, round fruit (R) is dominant to oval fruit (r). Pure breeding plants…

A: The test cross is another fundamental tool devised by gregor mendel. In its simplest form, a test…

Q: In tomato plants, round fruit (R) is dominant to oval fruit (r). Pure breeding plants with red and…

A: An allele can be recessive or dominant & in the given question two pairs of allele are mentioned…

Q: The production of eye-color pigment in Drosophila requires the dominant allele A. The dominant…

A: P   red-eye female X white-eye male F1 purple-eyed females        and       red-eyed males…

Q: Two genes on chromosome 7 of corn are glossy (g) for leaf texture and ramosa (r), which determines…

A: The formula of calculating recombination frequency is : Recombinant Frequency = number of…

Q: Tomato Plants In tomato plants, round fruit (R) is dominant to oval fruit (r). Pure breeding plants…

A: 1. Converted the expected phenotypic ratio from Part A into the expected probability for each of the…

Q: Fruit flies with one allele for curly wings (Cy) and one allele for normal wings (Cy+) have curly…

A: If a Fruit fly has one allele for curly wings (Cy) and one allele for normal wings (Cy+), then its…

Q: In corn the genes for tassel length (alleles T and t) and rust resistance (alleles R and r) are…

A: Progeny receives the character from parents in the form of egg and sperm. The transfer of character…

Q: Tomato Plants In tomato plants, round fruit (R) is dominant to oval fruit (r). Pure breeding plants…

A: According to the concept of genetic linkage, when genes are far apart or on the different…

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: The recessive alleles k (kidney-shaped eyes instead ofwild-type round), c (cardinal-colored eyes…

A: Inheritance or heredity is passing-on one trait from the parents to the progeny by either asexual or…

Q: Tomato Plants In tomato plants, round fruit (R) is dominant to oval fruit (r). Pure breeding plants…

A: The test cross is another fundamental tool devised by Mendel . In its simplest form, a test cross is…

Q: In fruit flies, curly wing shape (C) is dominant to wild-type (c), and hairy body (H) is dominant to…

A: Introduction The term allele refers to a specific gene variant. It is normal in genetics for genes…

Q: Fine spines (s), smooth fruit (tu), and uniform fruit color (u) are three recessive traits in…

A: Order of genes The gene orders are defined as the permutation of the arrangement of genome. The…

Q: Fruit flies having one allele for curly wings (Cy) and one allele for normal wings (Cy+) develp…

A: Fruit flies (Drosophila melanogaster) are small insects which are usually found in homes, hotels as…

Q: In fruit flies, red eyes (pr+_) are dominant to purple eyes (prpr) and normal wings (vg+_) are…

A: In fruit flies, red eyes (pr+_) are dominant to purple eyes (prpr) and normal wings (vg+_) are…

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

A: Genes are found on different chromosomes, occasionally far apart, but on the same chromosome, they…

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 Drosophila, the dominant Bar mutation (B, chromosome X, position 57) results in thin bar- shaped…

A: Bar mutation allele = XB (dominant) Wild allele for bar= Xb (recessive) Signed allele = Xsn…

Q: Tomato Plants In tomato plants, round fruit (R) is dominant to oval fruit (r). Pure breeding plants…

A: A test cross is a way to explore the genotpye of an organism. When a dominant phenotype i.e…

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: Tomato Plants In tomato plants, round fruit (R) is dominant to oval fruit (r). Pure breeding plants…

A: In tomato plants, the round fruit shape is dominant over the oval fruit shape. The allele for round…

Q: Female Drosophila with cinnabar eye (cn) and vestigal wings (vg) were mated to males with roof wings…

A: The genes present on the same chromosome cannot assort rather they tend to be inherited together.…

Q: In corn the genes for tassel length (alleles T and t) and rust resistance (alleles R and r) are…

A: Genes are located on chromosomes in linear order.

Q: In Drosophila, sepia eyes (se), curled wings (cu) and ebony body (e) are found, in this order, on…

A: If genes are located on the same chromosome then they are known as linked genes. In this condition…

Q: Two recessive traits in mice—droopy ears and flaky tail—arecaused by genes that are located 6 mu…

A: According to Mendelian inheritance, a single character is controlled by one or more genes and each…

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: Two genes are found in a chameleon, one for camouflage (dull colors dominant to vibrant colors) and…

A: Introduction :- A quality seen in the link between two variants of a gene is recessive. Each parent…

Q: An undergraduate student has been breeding fruit flies in the basement of the Biology building.…

A: A pedigree refers to the visual representations of the genetics of a family in the form of a family…

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: Another cross in Drosophila involved the recessive, X-linked genes yellow (y), white (w), and cut…

A: As per out honor code, we are allowed to answer only three subparts. You have posted multiple…

Q: Female Drosophila heterozygous for three recessive mutations e (ebony body), st (scarlet eyes), and…

A: Female Drosophila heterozygous for three recessive mutations e (ebony body), st (scarlet eyes), and…

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…

Genetic Variation

Genetic variation refers to the variation in the genome sequences between individual organisms of a species. Individual differences or population differences can both be referred to as genetic variations. It is primarily caused by mutation, but other factors such as genetic drift and sexual reproduction also play a major role.

Quantitative Genetics

Quantitative genetics is the part of genetics that deals with the continuous trait, where the expression of various genes influences the phenotypes. Thus genes are expressed together to produce a trait with continuous variability. This is unlike the classical traits or qualitative traits, where each trait is controlled by the expression of a single or very few genes to produce a discontinuous variation.