Both karyotyping and G_banding techniques show normal chromosomal pattern, however pedigree analysis revealed abnormality of genetic origin, what are the reasons of this?
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Both karyotyping and G_banding techniques show normal chromosomal pattern, however pedigree analysis revealed abnormality of genetic origin, what are the reasons of this?
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- Both karyotyping and G_banding techniques show normal chromosomal pattern, however pedigree analysis revealed abnormality of genetic origin, can you think of a reason that would explain the findings?A blood stain from a crime scene and blood samples from four suspects were analyzed by PCR using fluorescent primers associated with three STR loci: D3S1358, vWA, and FGA. The resulting electrophoretograms are shown below. The numbers beneath each peak identify the allele (upper box) and the height of the peak in relative fluorescence units (lower box). Solve, (a) Since everyone has two copies of each chromosome and therefore, two alleles of each gene, what accounts for the appearance ofonly one allele at some loci? (b) Which suspect is a possible source of the blood? (c) Could the suspect be identifi ed using just one of the three STR loci? (d) What can you conclude about the amount of DNA obtained from Suspect 1 compared to Suspect 4?The results of a paternity test using short tandem repeatsare listed in the table below. Who’s the daddy? How sureare you?
- A woman who sought genetic counseling is found to be heterozygousfor a chromosomal rearrangement between the second andthird chromosomes. Her chromosomes, compared to those in anormal karyotype, are diagrammed on the next page:(a) What kind of chromosomal aberration is shown?What explanations can account for the following pedigree of a very rare trait? Be as specific as possible. How might you be able to distinguish between these explanations? Pls help asapWhy is karyotyping significant in understanding chromosomal abnormalities? Short essay only thanks please the main answer
- A. Look at the pedigree, and DISREGARD individual II-8 for the moment. Is the pattern of inheritance of Unetan syndrome dominant or recessive? You may assume that the gene is FULLY-PENETRANT in this family. Please give two specific reasons that support your conclusion. B. Now, looking at BOTH the pedigree AND at the Southern blot, is this trait autosomal, X-linked, or Y-linked? Please give two specific reasons that support your conclusion. Once again, disregard II-8 for the moment. One of your two reasons must refer specifically to evidence present in the Southern blot. C. Define the gene alleles associated with Unetan syndrome. Your alleles MUST be consistent with the pattern of inheritance, AND your genetic notation must be consistent with that used throughout the course. Unetan syndrome allele: ________ Normal allele: ________Here are the results of the testcross:Green-eyes, wild-type wings 245Green-eyes, miniature wings 232Wild-type eyes, wild-type wings 250Wild-type eyes, miniature wings 2386.) In your opinion, is the grn gene on the same chromosome as the min gene? How do you know?Next, you set up another experiment to determine if grn is on chromosome #1. The only appropriate fliesthat you have handy are double-mutants for the black-body mutation (blk) and curved wings mutation(crv), but this should work just fine. First, you conduct a series of crosses to generate a strain of triple-mutant flies (grn blk crv). Then, you cross those with wild-type flies to generate triple hybrids.7.) What are the genotype(s) and phenotype(s) of the progeny of this cross?Next, you set up a testcross to reveal any linkage between the three genes.8.) What are the genotypes and phenotypes of this testcross?Need help, please. What are the ratios for the progeny phenotype(s)?
- A family is tested for spinal muscular atrophy, an autosomal recessive disease, using RFLP. The normal gene can be digested with a specific enzyme, while the mutant cannot. According to the pedigree below, which of the following is most likely the RFLP results?Pedigree Analysis Is a Basic Method in Human Genetics Using the pedigree provided, answer the following questions. a. Is the proband male or female? b. Is the grandfather of the proband affected? c. How many siblings does the proband have, and where is he or she in the birth order?Familial retinoblastoma, a rare autosomal dominant defect, arose in a large family that had no prior history of the disease. Consider the following pedigree (the darkly colored symbols represent affected individuals): a. Circle the individual(s) in which the mutation most likely occurred. b. Is the person who is the source of the mutation affected by retinoblastoma? Justify your answer. c. Assuming that the mutant allele is fully penetrant, what is the chance that an affected individual will have an affected child?
