A couple comes into your genetic counseling practice with a question about the chance a future child of theirs might have a genetic disease. Three or four men in the woman's family, including her father, had a condition that might be genetic. Although her father is still alive, she has had little contact with him for much of her life and cannot describe or name the condition. Her partner is a healthy man whose family has no history indicating the presence of a genetic condition. To provide more information about this possible genetic condition for the couple, what is the first step you recommend?

Sanders 3rd Edition
Ch. 6 - Genetic Analysis and Mapping in Bacteria and Bacteriophages
Problem A.2cGo online to the Online Mendelian Inheritance of Man (OMIM) website. Look up the following genetic conditions and answer the questions posed about them.
Look up cystic fibrosis (CF), OMIM 602421, and give the gene name and abbreviation and the chromosome location of the gene.
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Key Concepts
Online Mendelian Inheritance in Man (OMIM) Database
Gene Nomenclature and Abbreviations
Chromosomal Location of Genes
Go online to the Online Mendelian Inheritance of Man (OMIM) website. Look up the following genetic conditions and answer the questions posed about them.
Look up Tay–Sachs disease (TSD), OMIM number 272800, and give the name and abbreviation of the affected gene and the chromosome location of the gene.
Go online to the Online Mendelian Inheritance of Man (OMIM) website. Look up the following genetic conditions and answer the questions posed about them.
Go to the 'Population Genetics' section discussing the TSD gene. In a few sentences, summarize the human population in which TSD is most frequently found and give the approximate frequency of heterozygous carriers for the TSD mutation in North American Jews.
Go online to the Online Mendelian Inheritance of Man (OMIM) website. Look up the following genetic conditions and answer the questions posed about them.
Go to the 'Molecular Genetics' section and describe the most common mutation of the CF gene.
For bacteria that are F⁺, Hfr, F', and F⁻ perform or answer the following.
Describe the state of the F factor.
For bacteria that are F⁺, Hfr, F', and F⁻ perform or answer the following.
Which of these cells are donors? Which is the recipient?