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Bob and Linda are a newly married couple. They hope to have a child but are having trouble getting pregnant. They visit a fertility clinic, where they receive genetic tests. One test shows that Bob is healthy but carries a single disease-causing allele for CFTR (the gene that can cause cystic fibrosis), but Linda does not. What type of genetic test was performed?

Consider the karyotype below: This karyotype shows chromosomes from a [somaticcell]. The arrow is pointing to [adoublehelix]. The karyotype shows that this individual [TurnerSyndrome]  

There is a drug that can improve symptoms in ~90% of people with cystic fibrosis.

In humans, [female] development is the default pathway for sex development (i.e., whether a person is biologically male (e.g. has testis) or female (e.g. has ovaries).    Which gene determines if the default sex-development pathway occurs or the alternative sex-development pathway occurs? [SRY]   The gene that determines which sex development pathway occurs is on [theYchromosome].   If a sperm with a Y chromosome is used to fertilize an egg, what will the gonads look like when the embryo is  1 week old? [bipotential]  

Identify all of the following choices that are examples of causes of induced mutations.

Which of the following is NOT true regarding how genetic variants/mutations occur and result in genetic diseases and disorders?

In dairy cattle, milk yield and compositions are the most important economical traits. These traits are controlled by genes such as GHR (Growth Hormone Receptor). Your prized cattle, Moostache, has greatly increased milk production, and her genome reveals the variant of GHR that has been associated with increased milk production. A lab collects mammary cells from your prized cattle, Moostache, and uses somatic cell nuclear transfer to clone Moostache. The resulting blastocyst is placed into a surrogate mother to complete develpment and after several months the clone Mini Moostache is born. What type of cloning is this an example of?

A yeast strain was exposed to a chemical mutagen. As expected, exposure to mutagen resulted in a DNA sequence change in an essential gene (required for survival) you examined. Yet this mutation did not result in any lethal phenotype (cause death). Which of the following answers would BEST explain this apparent discrepancy?

The World Anti-Doping Agency currently bans gene doping.

At this point, the FDA will not even consider approving a gene therapy that involves using CRISPR/Cas9 technology to edit somatic cells.