Below is a map of the Drosophila melanogaster X chromosome, giving the distances between adjacent genes in cM.

Suppose that a female is heterozygous for an inversion of the exact entire region from v to wy.
She is also heterozygous for all the genes shown in the map, and is test-crossed.
What percentage of her progeny will be recombinants between the following gene pairs?
a) wy and g ___________
b) v and g _____________
Based on the given data, the genotype of female is: Sn+Sn,Lz+Lz,v+v,wy+wy,m+m,w+w,g+g and it is test crossed with complete recessive individual SnSn,LzLz,vv,wywy,mm,ss,gg. Thus, the percentage of her progeny will be recombinants between the following gene pairs is as follows:
a) wy and g: 8.3
b) v and g: 11.4
Below is a map of the Drosophila melanogaster X chromosome, giving the distances between adjacent genes...
In Drosophila melanogaster, the map positions of the three following genes are known in centiMorgans. The three genes are striped thorax (3-62), str, white ocelli (3-76), wo, and claret colored eyes (3-100), cl. A. If str wo cl+/ str+ wo+ cl females are crossed to males that are homozygous recessive for all three genes, what will the types of offspring be and what will their numbers be if 1,000 progeny are scored? Assume that there is no interference in this...
Genetic Linkage The six genes listed below are all located on Chromosome 2 of Drosophila melanogaster. Your goal is to construct a genetic map of Chromosome 2. That is, determine the order of these genes along chromosome 2 and the map distance in centimorgans between each gene. To complete this task, you will be given the results of a variety of two-point test crosses involving these genes. For each test cross you may assume that the female is heterozygous and...
Drosophila
T a heterozyg chromosome 2), and hot tamale Cht). 301 307 46 36 ap ht + 41 ap + b ht h 리)5 4. Black body (b/b), curved wing(c/e), and purple eye color (pr/pr) are recessive traits known to be on chromosome 2 in Drosophila. A testcross of a heterozygous female for all 3 genes was crossed to a black bodied, curved wing. purple eyed male fly and yielded the following progeny Phenotype class Number Type Phenotype class Number...
4. There are three genes on the X-chromosome in drosophila, yellow (y), white (w), and cut (ct). A yellow-bodied, white-eyed, and a homozygous normal winged female fly was crossed to a male with wild type body, wild type eyes, and cut wings. The Fi females were wild type for all three traits, while the Fi males had yellow bodies, white eyes, normal wings. The Fi females were crossed to yellow bodied, white eyed, cut wing males. The resulting F2 progeny...
Three genes with recessive mutant phenotypes are located on the same chromosome in maize: waxy endosperm (wx), shrunken endosperm (sh), and virescent seedling (v). A plant with all three mutant phenotypes is crossed with a true-breeding, wild-type plant. Resulting F1 plants are then backcrossed to the parental mutant line to produce the following progeny: Waxy Shrunken Virescent Number wx sh + 89 + + v 92 + + + 1482 wx sh v 1475 + sh + 480 wx +...
In Drosophila, a fully hetero sophila, a fully heterozygous female with the X-linked recessive genes a bande not necessarily in that order on the chromosome) was mated to ma c(not necessarily in that order on the chromosom in that order on the chromosome). The offspring occurred in the following phenotypic ratios: Phenotypes Numbers wildtype ac,b 426 428 cb b, a c, a Total 1000 a) What is the arrangement among the genes? Which gene is in the middle? b) What...
43. Genes a and b are X-linked and are located 7 mu apart on the X chromosome of Drosophila. A female of genotype a+ b/a b+ is mated with a wild-type (a+b+/Y). a. What is the probability that one of her sons will be either a+b+ or a b+ in phenotype? b. What is the probability that one of her daughters will be a+b+ in phenotype? 44. Three recessive autosomal mutations in Drosophila: a versus wild-type A. b versus B,...
1. The following diagram shows the genetic map for a chromosome. A B C D 10cM 5cM 40cM If a diploid female heterozygous for A and D (A D//a d) is testcrossed to a homozygous recessive male (a d/a d), what percent of the progeny are predicted to have the genotype A d/a d? A. 100 B. 75 C. 50 D. 25 E. Can’t be determined 2. Yellow body (y), vermillion eye color (v) and miniature body (m) are recessive...
Three genes with recessive mutant phenotypes are located on the same chromosome in maize: short stem (ss), defective endosperm (de), and virescent seedling (v). A plant with all three mutant phenotypes is crossed with a true-breeding, wild-type plant. Resulting F1 plants are then backcrossed to the parental mutant line to produce the following progeny: Waxy Shrunken Virescent Number ss + + 290 + de v 282 ss de + 89 + ...
the fruit fly, Drosophila melanogaster, an allele (v) of the gene vermillion gives flies purple eyes and is recessive to the wildtype red eye color (v+). An allele y of the yellow gene, gives flies a yellow body color compared to the dominant brown body color (yt). A heterozygous females for the two different mutations is test-crossed with mutant (i.e., homozygous recessive) males. The phenotypes of the progeny of this cross and their corresponding numbers are given below Yellow body,...