In Drosophila, the genes for ebony body and sepia eyes are on the same chromosome. If s+se+e X s+se+e dihybrids are crossed, what is the maximum number of genotype combinations that can occur? Select an answer and submit. For keyboard navigation, use the up/down arrow keys to select an answer. a 2. 4. C 8 d 16

In Drosophila, the genes for ebony body and sepia eyes are on the same chromosome. If s+se+e X s+se+e dihybrids are crossed, what is the maximum number of genotype combinations that can occur? Select an answer and submit. For keyboard navigation, use the up/down arrow keys to select an answer. a 2. 4. C 8 d 16

Concepts of Biology

1st Edition

ISBN:9781938168116

Author:Samantha Fowler, Rebecca Roush, James Wise

Publisher:Samantha Fowler, Rebecca Roush, James Wise

Chapter8: Patterns Of Inheritance

Section: Chapter Questions

Problem 2ACQ: Figure 8.10 In pea plants, purple flowers (P) are dominant to white (p), and yellow peas (Y) are...

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Here are the results obtained by Bridges and Morgan for crossing over analysis between black, curved, purple, speck, star and vestigial genes, all on II chromosome of drosophila. - Draw the genetic map of chromosome II. Tested mutations black curved black purple black speck black star black vestigial curved purple curved speck curved star curved vestigial purple speck purple star purple vestigial speck star speck vestigial star vestigial Total nb of analyzed flies (T) 62 679 48 951 685 16 507 20 153 51 136 10 042 19 870 1 720 11 975 8 155 13 601 7 135 2 054 450 Nb of identified recombinant (R) 14 237 3 026 326 6 250 3 578 10 205 3 037 9 123 141 5 474 3 561 1 609 3 448 738 195 R/T ratio 0,2271 0,0618 0,4759 0,3786 0,1775 0,1996 0,3024 0,4591 0,0820 0,4571 0,4366 0,1183 0,4832 0,3592 0,4333
In Drosophila,, the curled mutation (cu, chromosome 3, position 50.0) results in wings that curl up, while ebony (e, chromosome 3, position 70.7) results in a dark body. True breeding, wild type females are mated with true breeding males with curled wings and ebony bodies. Considering Drosophila notation, which of the following correctly diagrams the F1 cross? X X 3+ cu e + X X e + + + + + cu e + O + ■ 3+ X X X X Y Y + + ■ cu cu cu ' + ■ cu ■ ' + e + e e e e e + cu +
Arabidopsis thaliana is a diploid plant model organism with 2n = 10. Please select the number options to match the following: %3D number of copies of each gene an Arabidopsis thaliana leaf cell has 1 v number of chromosomes an Arabidopsis thaliana leaf cell contains 1. two 2. five number of chromosomes an 1 v Arabidopsis thaliana gamete cell contains 3. ten pairs of homologous chromosomes an Arabidopsis thaliana leaf cell contains 2.
Three genes yellow (y) white (w) and cut (ct) are under investigation for possible linkage on the X chromosome. Pure breeding yellow body/white eye/normal wing female flies are crossed with pure breeding black body/red eye/cut wing males. The females in the F1 are black/red/normal, the males are all yellow/white/normal.The F2 males and females are crossed, but ONLY the male flies are are scored (see table). Phenotype Male offspring y + ct 9 + w + 6 y w ct 90 + + + 95 + + ct 424 y w + 376 A. Is the gene order as written (y-w-ct) the same as the gene order on the chromosome? B.What is the mapping distance between yellow and white? C.What is the between cut and white? D.What is the mapping distance between yellow and cut?
Purple flowers are dominant to white flowers. Identify the phenotypefor the following genotype Ff, FF, ff and determine if the genotype is heterozygous or homozygous. * For each row, you should select two columns. Purple flowers White flowers Heterozygous Homozygous Ff FF ff Brown eyes are dominant to blue eyes. Identify the phenotype for the following genotype BB, Bb, bb and determine if the genotype is heterozygous or homozygous. * 口ロ口

Arabidopsis thaliana is a diploid plant model organism with 2n 10. Please select the number options to match the following number of copies of each gene an Arabidopsis thaliana 1 leaf cell has number of chromosomes an Arabidopsis thaliana leaf cell contains 1. two 2. five number of chromosomes an Arabidopsis thaliana gamete cell contains 3. ten pairs of homologous chromosomes an Arabidopsis thaliana 2 leaf cell contains
In Drosophila, the dominant Bar mutation (B, chromosome X, position 57) results in thin bar- shaped eyes, while the recessive singed (sn, chromosome X, position 21) results burnt looking bristles. True breeding, wild type females are mated with true breeding males with Bar eyes and singed bristles. 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                                  =1
In Drosophila, the brown mutation (bw, chromosome 2, position 104.5) results in brown eyes, while miniature (min, chromosome X, position 36.1) results in wings that are 2/3 the length of wild type. True breeding, wild type females are mated with true breeding males with brown eyes and miniature wings. 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                                  =1
In Drosophila the genes A B D are linked. You cross a strain that is homozygous for d with a strain that is homozygous for ab.   Below are the phenotypes and progeny of a test cross. Give the correct order of the genes in the chromosome and determine the map distances between genes. Phenotype       Number    ABd                  389 abD                  413 ABD 60 abd 68 aBd 29 AbD 34 Abd 3 aBD 4
In the following cross, imagine that you have a female fly that has two Xs and one Y due to a nondisjunction event in her mother's germ cells. Draw out what the possible gametes are for both the female and the male and also a Punnett square showing the genotypes, phenotypes, and sex of the possible flies as a result of this cross. You do not need to provide the probabilities of each of these. Red-eyed wi C Ở Red-eyed wt XX Y X Y Meiosis
Draw a Punnett square for the dihybrid cross described below (it is the same story as given for question 8, above) and use it to fill in the blanks correctly in the text that follows. NOTE: Please type in whole numbers, no symbols. There are two known alleles of gene occupying a specific locus in the X chromosome. The gene in question codes for a transcription factor involved in digit development. The mutant allele is dominant and gives rise to an additional but non-functioning little finger (polydactyly) on both hands. A couple have had their DNA sequenced at the region of interest, the male exhibits polydactyly because of the mutation, the female is homozygous wild type at the same locus and therefore has the wild type phenotype. Both have green eyes. In this story; eye colour shows a monogenic autosomal inheritance pattern and the allele for brown eyes shows incomplete dominance with that for blue eyes, the heterozygote phenotype is green eyes. The genes for eye colour and…
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