In fruit flies, you are mapping three genes in a three point cross. The mutants are hairy body (h), sepia colored eyes (se) and female sterility (g). You cross a heterozygous parent with a homozygou recessive parent and obtain the following results: Type Number
Q: If you had a fruit fly (Drosophila melanogaster) that was of phenotype A, what cross would you make…
A: The Chromosomal Theory of Inheritance, as given by Sutton and Boveri, states that the genes are…
Q: is image How many different phenotypic categories do you observe in the resulting progeny? Which…
A: Phenotype is the external appearance of an organism.
Q: In sweet peas, gene C or P alone produces white flowers, the purple colour being due to the presence…
A: Dominance is a physiological influence on the same gene locus by an allele over its partner allele.…
Q: autotetraploid Chinese primrose (Primula sinensis L.), the gene controlling stigma color is very…
A: Polyploidy is a condition in which there would be the presence of more than two sets of chromosomes…
Q: You have a Drosophila line that is homozygous for autosomal recessive alleles a, b, and c, linked…
A: The Recombinant Frequency tells us about the percentage of or the proportion of recombinants present…
Q: The crossing of two orange-flowering plants results in 61 orange-flower progeny and 27 white-flower…
A: Introduction The passing on of traits from parents to their offspring is known as heredity, also…
Q: In a cross of a h-r+ X h+r-, the following progeny were produced: 25 h-r+ 23 h+r- 7 h+r+ 5 h-r-…
A: The genetic distance between two genes is calculated by : (recombinant progenies/ Total number of…
Q: A, B and C are three linked genes, A and B are separated by 40 cM and B and C are separated by 30…
A: Two linked genes have a certain “rate of concurrence” of recombination between them. This is known…
Q: In a testcross of a corn plant heterozygous for 3 linked, recessive genes (a, b, & d), the following…
A: Alfred H. Sturtevant was the first to discover gene mapping. In order to determine the relative…
Q: What is the maximum possible number of doses of pigmentation for a given plant? . How many color…
A: There are few points: Traits are classified into phenotypic character Number of gene pairs that are…
Q: In tomatoes, dwarf (d) is recessive to tall (D), and opaque (light-green) leaves (op) are recessive…
A: The parents given are, D opd Op×D opd op The distance distance between the genes is given as 7 m.u.…
Q: Genes a, b, and c are linked, and pairwise crosses gave the following distances: a-b 20 cM b-c 2 cM…
A: Note - Since you have asked multiple questions, we will solve the first question for you. If you…
Q: In a parental cross of a ADHL disease trait, where the father is affected and the mother is…
A: ADHL disease is a autosomal dominant trait
Q: autotetraploid Chinese primrose (Primula sinensis L.), the gene controlling stigma color is very…
A: Autotetraploid is a genetic condition that is characterized by the presence of four times the…
Q: If Y is the allele for the dominant yellow seed color and y is the allele for the recessive green…
A: An individual receives two variants of each gene from each parent, which are known as alleles. These…
Q: Cinnabar eye color is a sex-linked, recessive characteristic in fruit flies. If a female having…
A: Cinnabar eye is an X-linked recessive characteristic in fruit flies. In general, X-linked…
Q: Using the pedigree chart attached: Above is a pedigree for colorblindness. Based on the pedigree,…
A: Pedigree is a representation in the form of a diagram or family tree of inheritance of genetic…
Q: The following pedigree shows the inheritance of a disease due to a completely penetrant sex-linked…
A: Sexual intercourse refers to genetic patterns that are specific to the gender in which the genetic…
Q: Purple flowers are dominant to white flowers. Identify the phenotypefor the following genotype Ff,…
A: Mendel's law of dominance states that any gene will have a minimum of two alleles(traits or forms)…
Q: A geneticist crosses two yellow mice with straight hair and obtains the following progeny: 1/2…
A: A dihybrid cross is a pairing procedure in which two different, genetically determined…
Q: In peas, long stem "A" is dominant over short stem, "a". Give the expected genotypes, phenotypes and…
A: Each trait in an organism - animal or plant - is guided by two alleles of the same gene for the said…
Q: A number of all-white cats are crossed, and they produce the following types of progeny: 1216…
A: To find: To find the correct genotype of the black progeny from the given types of progeny
Q: In a cross between two, dihybrid, heterozygous individuals, what fraction of the offspring will be…
A: dihybrid organism is one that is heterozygous at two different genetic loci.
Q: In a population of pea plants, there are two variations for flower colors-- purple and white. The…
A: A test cross is a cross between a person with an undetermined genotype and a person with a confirmed…
Q: A cross is made between a heterozygote, +++/abc, and a recessive homozygote, abc/abc. Analysis of…
A:
Q: In dogs, dark coat color phenotype (D) is dominant over albino (a) and short hair (S) is dominant…
A: Given Allele D is dominant over allele a Allele S is dominant over allele l D = dark coat…
Q: Assume that you have a garden and some pea plants have solid leaves and others have striped leaves.…
A: The DNA (deoxyribonucleic acid) is the hereditary form of an organism that is passed on by the…
Q: In an autotetraploid Chinese primrose (Primula sinensis L.), the gene controlling stigma color is…
A: Polyploidy is a condition where there would be the presence of more than two sets of chromosomes in…
Q: In the self of a polygenic trihybrid R1/r1 ; R2/r2 ; R3/r3,use the product and sum rules to…
A: When a self cross takes place between the polygenic hybrid, then: The probability in which only one…
Q: The pedigree chart below indicates that individual I12 has cystic fibrosis. What is the chance that…
A: Cystic Fibrosis is an inheritable chronic disorder, that affects the cells that secrete mucus,…
Q: In fruit flies (Drosophila melanogaster), the bn+ allele for normal dull red eyes is dominant to the…
A: The alleles are the alternative forms of a gene that are located on the same locus of a homologous…
Q: In Drosophila, an X-linked recessive mutation, (s) causes irregular wing margins. Give the…
A: Drosophila melanogaster is a fruit fly having 2n = 8 chromosomes. The male has a sex pair of…
Q: The pedigree below shows inheritance of a particular autosomal trait across three generations. Males…
A: Pedigree is a family tree that is made up of symbols and line. Pedigree represents person’s family…
Q: The pedigree shows inheritance of the autosomal recessive trait cystic fibrosis in a family. Family…
A: Diploid organisms carry two sets of chromosomes and thus, carry two copies of almost every gene.…
Q: For pea plants with the following genotypes, list the possible gametes that the plant can make:A. TT…
A: Genetics is the branch of biology that deals with the study of genes, their inheritance patterns,…
Q: Cross F1 red x orange-1 red x orange-2 orange-1 x orange-2 orange-2 x pink F. (cross 3) x pink all…
A: All these are monohybrid crosses involving only one character. Dominant character is always…
Q: Consider the following cross: AaBbCcDdEe X AaBbCcDdEe. How many different phenotypes would you…
A: Introduction A gene is consisting of a pair alleles/ factors and these alleles can be dominant or…
Q: You are looking at a maternal effect gene that comes in 2 alleles, B (brown) is dominant and b…
A:
Q: In dogs, dark coat color phenotype (D) is dominant over albino (a) and short hair (S) is dominant…
A: Given D is dominant over a D gives dark coat colour and a gives albino colour. S is dominant…
Q: Bicoid is a maternal-effect gene in the fruit fly Drosophila. Recessive mutations in bicoid can…
A: A substance that specifies different fate to the cells due to the difference in their concentration…
Q: A homozygous strain of corn that produces yellow kernels is crossed with another homozygous strain…
A: Considering that kernel color is controlled by a single gene pair and yellow is dominant over…
Q: In dogs, dark coat color is dominant over albino, andshort hair is dominant over long hair. Assume…
A: Hereditary qualities is the study of genes and heredity of how certain characteristics or attributes…
Q: In tomatoes, tall (D) is dominant over dwarf (d) and smooth fruit (P) is dominant over pubescent…
A: The law of segregation proposes that the alternative forms of the genes that are known as alleles…
Q: In fruit flies, Cinnabar eyes are encoded by a recessive allele located on the X chromosome. If a…
A: An allele may be defined as different forms of the same gene. The dominant allele is the one that…
Q: For an X-linked recessive allele, what proportion of female offspring will be carriers in the cross…
A: The X-linked recessive disease is caused by the presence of one X-linked recessive allele. It is an…
Q: In the pedigree attached, the shaded symbols represent people affected with a neurological disorder…
A: The pedigree is the family history of a particular disease that involves several signs and symbols…
Q: In tomatoes, dwarf (d) is recessive to tall (D) and opaque (light-green) leaves (op) are recessive…
A: Linkage refers to the close co-location of genes or combinations of DNA on chromosomes to one…
Q: autotetraploid Chinese primrose (Primula sinensis), the gene controlling stigma color is very near…
A: Autotetraploid are organisms that contain four sets of chromosomes that are derived from the same…
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: What would be the chromosome number of progeny resulting from the following crosses in wheat? What…
A: The complete chromosome sets present in the cells of an organism is referred to as ploidy. Humans…
Trending now
This is a popular solution!
Step by step
Solved in 4 steps
- A cross between yeast strains ab x AB produces the following unordered tetrads: a. Label each group of tetrads as parental ditypes (PD), non-parental ditypes (NPD), or tetratypes (T). AB AB ab ab 43 6 22 b. Are the genes linked or on separate chromosomes? Why? aB aB Ab Ab Ab AB ab aB c. If the genes are linked determine the distance between them.You are given a Drosophila female that looks wild-type but is heterozygous for mutations intan body (t), miniature wings (m), and white eyes (w). You test cross this female with a tanbodied, miniature winged, and white-eyed homozygous mutant male, and you obtain thefollowing 1400 progeny: Phenotype : number+ + + : 608t m w : 516+ m w : 2t + + : 6+ m + : 39t + w : 46+ + w : 81t m + : 102 Calculate the distance between each pair t-m, m-w, and t-w only using the number ofrecombinants between them (i.e. ignoring the gene in the middle). Draw a linear map with thedistances between genes.In tomato, the following genes are located on chromosome 2: + tall plant d dwarf plant + uniformly green leaves m mottled green leaves + smooth fruit p pubescent (hairy) fruit Results of the cross +++ / dmp and dmp / dmp were: + + + = 470 + m p = 1 + + p = 14 d + p = 25 d + + = 0 d m p = 441 + m + = 19 d m + = 30 Identify the single and double crossovers among the progeny.
- In corn, male sterility is controlled by maternal cytoplasmic elements. This phenotype renders the male part of the corn plants (i.e the tassel) unable to produce fertile pollen; the female parts, however, remain receptive to pollination by pollen from male fertile corn plants. However, the presence of a nuclear fertility restorer gene F restores fertility to male sterile lines Using the cardboard chips, simulate the crosses indicated below. Give the genotypes and phenotypes of the offsprings in each cross, and properly label the nucleus and the cytoplasm of each individual in the cross Legend male sterile cytoplasm Male fertile cytoplasm FF nucleus Ff nucleus ff nucleus A. Male sterile female x FF male Explain the phenotype of the offspring B. Male sterile female x Ff male Explain the phenotype of the offspringn corn, male sterility is controlled by maternal cytoplasmic elements. This phenotype renders the male part of the corn plants (i.e the tassel) unable to produce fertile pollen; the female parts, however, remain receptive to pollination by pollen from male fertile corn plants. However, the presence of a nuclear fertility restorer gene F restores fertility to male sterile lines Using the cardboard chips, simulate the crosses indicated below. Give the genotypes and phenotypes of the offsprings in each cross, and properly label the nucleus and the cytoplasm each individual in the cross Legend male sterile cytoplasm Male fertile cytoplasm FF nucleus Ff nucleus ff nucleus A. Male sterile female x FF male Explain the phenotype of the offspring B. Male sterile female x Ff male Explain the phenotype of the offspringIn com, male sterility is controlled by maternal cytoplasmic elements. However, the presence of a nuclear fertility restorer gene (F_) restores fertility to male sterile lines. a. What are the crosses male sterile female x FF male? Give the genotypes and phenotypes of the offspring in each cross. Explain.
- Three autosomal recessive mutations in yeast, all producing the same phenotype (m1, m2, and m3), are subjected to complementation analysis. Of the results shown below, which, if any, are alleles of one another? Predict the results of the cross that is not shown—that is, m2 * m3. Cross 1: m1 * m24 F1: all wild-type progeny Cross 2: m1 * m34 F1: all mutant progenyn corn, male sterility is controlled by maternal cytoplasmic elements. This phenotype renders the male part of the corn plants (i.e the tassel) unable to produce fertile pollen; the female parts, however, remain receptive to pollination by pollen from male fertile corn plants. However, the presence of a nuclear fertility restorer gene F restores fertility to male sterile lines sing the cardboard chips, simulate the crosses indicated below. Give the genotypes and phenotypes of the offsprings in each cross, and properly label the nucleus and the cytoplasm of each individual in the cross Legend male sterile cytoplasm Male fertile cytoplasm FF nucleus Ff nucleus ff nucleus A. Male sterile female x FF male Explain the phenotype of the offspring B. Male sterile female x Ff male Explain the phenotype of the offspringOne yeast strain carries the alleles lys+ and arg+, whereas another strain has lys-3 and arg-2. The two strains were crossed toeach other, and an ascus obtained from this cross has four spores with the following genotypes: lys+ arg+, lys+ arg-2, lys-3arg+, and lys-3 arg 2. This ascus has a. a parental ditype.b. a tetratype.c. a nonparental ditype.d. either a tetratype or a nonparental ditype.
- Imagine Drosophila genes C, D, and E are autosomal genes located close to each other on the same chromosome (same assumptions as the first problem). You cross a C D E homozygote with a c d e homozygote, then cross the F1 females with a c d e homozygous male. Of 400 progeny, you observe the following phenotypes: 135 CDE 139 cde 22 cDE 18 Cde 42 CdE 38 cDe 3 cdE 3 CDe a. What is the order of the genes? Calculate the distance between genes and draw a map to get the final answer. Question 2 options: 1.CED 2. DEC 3. ECD 4. DCEIn Drosophila, the gene loci for curved wings and purple eyes are 20 centimorgans (map units) apart from each other on an autosomal chromosome. Wild-type flies were mated with double mutant flies with cv cv p p genotypes and curved wing/purple eye phenotypes. AlIl of the F1 flies had wild type phenotypes. The F, flies were crossed with double mutant flies with cv cv p'p genotypes and curved wing/purple eye phenotypes. What are the predicted percentages of flies in the F2 generation with wild type wings and eyes, curved wings and wild type eyes, wild type wings and purple eyes, and curved wings and purple eyes?+ ec +/Y + + w/Y y ec +/Y + ec +/y ec w ++ w/y ec w у ес +у ес и Determine the order in which the three loci y, ec, and w Occur on the chromosome and prepare a linkage map. 7.22 A cross involving X-linked genes was made between yellow, bar, vermilion female fies and wild males, and the F1 females were crossed with y B v males. The following phenotypes were obtained when 1000 progeny were exam- ined: Dra ord ma the 7.2 546 244 160 50 + + + + Bv y Bv y+ + y+v y B+ and an and and and +B + re + + v ge Determine the order in which the three loci occur on the chromosome and prepare a linkage map. 7.23 Female Drosophila heterozygous for ebony (e"le), scarlet (st*/st), and spineless (ss*/ss) were testcrossed, and the following progeny were obtained: PROGENCY PHENOTYPES NUMBER ir Wild type Ebony Ebony, scarlet Ebony, spineless Ebony, scarlet, spineless Scarlet 67 8. 68 347 78 368 Scarlet, spineless Spineless (a) Are these genes linked? Justify your answer. (b) Write the genes given on a…