You have already localized the genes to the same chromosome by deletion mapping, and now decide that the best way to accomplish the mapping is to conduct two simultaneous three-point testcross experiments. The genes you are investigating are as follows: N = round leaves, n = notched leaves; H = smooth stems, h = hairy stems; R = purple flowers, r = red flowers; B = grey seeds, b = black seeds; and Y = green pods, y = yellow pods. Earlier experiments you have done already established that gene B is in the middle of this gene cluster, so you design both three-point test crosses to include that gene. Cross #1 is designed as RrHhBb x rrhhbb while cross #2 is NnBbYy x nnbbyy. The results of both crosses are given in the table below. Based on the information given, determine the arrangement of these five genes including the position of each allele in the heterozygous fly and the distances between each pair of genes. (Hint: treat each experiment separately, knowing that gene B is in the middle!)

Q: In this program, you are provided with phenotype pair counts of F2 offspring at two research…

A: The F2 cross between the heterozygous F1 offspring must yield the ratio 9:3:3:1 (phenotypic). In the…

Q: You make a test cross between an F1 plant that is heterozygous for two dominant resistance genes (R1…

A: Linkage is the relation between the two genes on the same chromosome. Their relationship with each…

Q: Two corn plants are studied. One is resistant (R) and the other is susceptible (S) to a certain…

A: Maize, often known as corn in North American and Australian English, is a cereal grain that was…

Q: were observed and used to make a map of these genes.  Calculate the interference.…

A: Answer. The linkage of the genes in a chromosome can be in the form of a genetic map or linkage map.…

Q: The results of a test cross of a plant that is heterozygous for three traits encoded by the genes D,…

A: Physical mapping is used to find the order of genes and the distance between genes in the DNA…

Q: b) PPSSLL x PpSsll

A: Alleles are the alternative forms of a gene that are located on the same locus of a homologous…

Q: Solve the following problem by listing the given genotypes, test crosses, and genotypic and…

A: In plants, the serrated leaf is a dominant trait that can be represented by the genotype-SS or Ss…

Q: Waxy endosperm (wx), shrunken endosperm (sh) and yellow seedling (v) are encoded by three recessive…

A: When the genes are present at the same chromosomes, they are termed as linked genes. When three…

Q: In zucchinis there are two genes controlling flower colour. One gene determines if pigment is…

A: The gene controlling for the pigmentation is the Pp gene . Where allele for pigmentation is dominant…

Q: Which phenotypes can be said to be dominant?

A: Answer: Phenotype is the physical appearance of any living organisms, it can be either dominant or…

Q: To identify the genotype of yellow seeded pea plants as either homozygous dominant (YY) or…

A: The genotype is defined as a part of the genomic constitution of an organism that controls different…

Q: A) Describe the data you collect from the Purple 1 x Purple 2 cross. Predict the genotype of each of…

A:

Q: In tomatoes, round fruit is dominant over elongated fruit, and smooth skin is dominant over fuzzy or…

A: Test cross is the cross in which the unknown genotype bearing parent is crossed with a homozygous…

Q: In corn, the allele f ′ causes floury endosperm and the allele f ″ causes flinty endosperm. In the…

A: First, examine the crosses and also the ensuing genotypes of theendosperm:

Q: Use the following information about pea plants: S = spherical seeds; s = wrinkled seeds Y = yellow…

A: Gregor Mendel discovered the basic laws of inheritance while working on pea plants. He concluded…

Q: Two different genes control the expression of kernel colour in Mexican black corn: black pigment…

A: A person expressing a dominant phenotype may have two copies of the dominant allele or single copy…

Q: The genetic map was based on crosses in Drosophila involving the three sex-linked genes a, b and c.…

A: A linkage map is a map based on the frequencies of recombination between markers during crossover of…

Q: wo corn plants are studied. One is resistant (R) and the other is susceptible (S) to a certain…

A: From the cross it is clear that maternal genes are expressed in the offspring. Such a pattern of…

Q: One strain of periwinkleplants has green leaves and another strain has white leaves. Bothstrains are…

A: A collection of all the genes of an individual or a plant is known as the genotype of that…

Q: When one crosses two corn plants with green seedlings, the following progeny is obtained: 358 green…

A: Phenotypic ratio for the given numbers is, = 358/32, 87/32, 32/32 = 11.1, 2.7, 1 = 12 : 3 : 1…

Q: three recessive genes a, b, and c in the model plant Arabidopsis are found to be linked on…

A:

Q: A cross in plants is done between the parents CCDD and ccdd to create a dihybrid F1 plant. This F1…

A: Introduction: Genetic variation refers to the differences in genetic material that exist among…

Q: phenotypes: 42 MP; 374 Mp; 367 mP; 27 mp.  What can you conclude from these data

A: Recombinant offspring are children that have a different allele combination to their parents.

Q: Male Drosophila from a true-breeding wild-type stock were irradiated with X-rays and then mated with…

A: J. Muller first showed in his experiment that exposure to certain dose of X-rays higher than the…

Q: locus. The allele for brown eye color is dominant to the allele for brick red eye color and to the…

A:

Q: You cross two plants and get the following results: Recombinant progeny type A: 43 Recombinant…

A: Crossing over is the exchange of genetic material between non sister chromatid of chromosome causes…

Q: Tired of watering her garden, your instructor is attempting to grow desert plants. One such plant is…

A: According to Simple Mendelian inheritance , there are two alleles for a gene that determine a…

Q: You successfully isolate an hsf2/hsf2; hsf3/hsf3 double mutant stock. You cross this plant to an…

A: 40 plants

Q: Below are the results from a 3 gene testcross between an XxYyZz plant and an xxyyzz plant: Testcross…

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

Q: a certain species of plant, a dihybrid (round, pink seeds) is mated with a test-cross strain…

A: Recombination between linkage groups is wont to map their distance apart on the chromosome. The map…

Genomic studies

Genomic studies (genomics) is the study of the whole genome of an organism. Using bioinformatics and high-performance computing, genomic researchers examined massive amounts of deoxyribonucleic acid (DNA)-sequence data to discover variations or mutations that affect drug response, health, or disease. Genomics is a much younger discipline than genetics, having only emerged in the last few decades as a result of technological advancements in DNA sequencing and computational biology.