Why are pedigrees useful to track genetic disorders?
What will be an ideal response?
Pedigrees can be used to track genetic disorders within families. Individuals with hemophilia can trace the inheritance of these genes back through their family heritage in order to identify the source of the trait. Genetically, these family trees of inheritance can be used to determine the exact generation in which a disorder appears or which individual may have been a carrier for the disorder and whether a couple should risk having a child with a particular trait.
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A researcher might use site-directed mutagenesis because
A) spontaneous mutations occur too frequently to study. B) using a mutagen yields results that are specific to a gene and not applicable everywhere in the genome. C) mutation can happen at a specific site in the genome, compared to a mutagen that might cause mutations in several genes. D) it works in humans but not in experimental organisms or cell culture.
You place an inoculum of your bacterium on a glass slide and add a drop of hydrogen peroxide reagent. Promptly you see bubbles appear, indicating the presence of a particular enzyme that the bacterium produces. What type of identification test does this exemplify?
A. Immunochromatography B. Precipitation test C. Microarray D. Biochemical test
How long does the average red blood cell live?
a. 4 days b. 4 weeks c. 4 months d. 1 year e. 4 years
A protein is tightly associated with the plasma membrane and it can be isolated by treating the membrane with a strong detergent. What type of membrane protein is this?
A. either an integral or a peripheral membrane protein B. a peripheral membrane protein C. neither an integral nor a peripheral membrane protein D. an integral membrane protein