Melanin is a skin pigmentation that absorbs and dissipates broadband UV rays. Since UV radiation causes DNA damage, melanin pigments protect the skin and reduce the risk of cancer. When skin is exposed to sunlight, melanin production is increased, causing the skin to tan. This demonstrates that Select one: a. the environment causes mutations that have no effect on the chance of survival b. the expression of some genes is influenced by the environment c. the environment causes mutations that increase the chance of survival d. the environment causes mutations that have a large effect on the chance of survival

The goal of most gene therapies is to insert a healthy copy of a gene into the genome.  Besides CRISPR, techniques for integrating DNA into the genome do not target that DNA to a particular genomic location and thus different cells end up with the DNA sequence in different positions. C. Over time the expression of an integrated gene will change, usually decreasing.  Describe how you think the cell downregulates expression of an integrated gene.

Epigenesis relating to genetics refers to which of the following      A. Genetic information is limited to what we inherit only from our biological parents.     B. Genes are not influenced by environmental factors.       C. Genes we inherit are fully expressed at birth.              D. Genes are turned on or off as needed, by the developing body or environmental triggers, across the life-span

Option 3: It is available, so use it. The planet is changing, and we should use this to help humans evolve. Allow changes. Drawbacks - those who don't have enough money can't afford it. Look through these options and choose one. What are some other pros and cons of genetic modifications?

An example of inappropriate expression of a protein and what could be learned from this type of experiment include(s); a. All of these would help a scientist to learn the functions of a protein. b. Limiting the level of protein to identify the variety of functions of a protein. c. Producing too much of a protein to identify the functions of a protein d. Producing a protein too early in development to identify the function of that protein

22 A study was conducted to see how people respond to medical statistics. Each subject was given the following descriptions of three screening tests for cancer. If you have this test every 2 years, it will reduce your chance of dying from cancer A by around one third over the next 10 years. Test A: Test B: If you have this test every 2 years, it will reduce your chance of dying from cancer B from around 3 in 1,000 to around 2 in 1,000 over the next 10 years. Test C: If around 1,000 people have this test every 2 years, 1 person will be saved from dying from cancer C every 10 years. a. One of these describes the number needed to treat cancer (see Extensions Task 21). Which one? b. One describes the absolute risk reduction. Which one? SUBTRACT c. One describes the relative risk. Which one? X Greater

Scientists look at thousands of mutagenized flies, one at a time, under a microscope. They are looking for flies that don't look like they have developed normally. They find a remarkable fly with an extra thorax and a complete extra set of wings. This is an example of: A crazy waste of time A forward genetic screen A reverse genetic screen

Unusually high levels of Mdr1 provide stem cells with a. Nutrients needed b. Protection of their genomes from mutagenic agents c. Apoptotic factors d. Ability to differentiate

For gain-of-function disorders, which of the following treatment strategies is the be . A. Gene augmentation B.Supply healthy cells . C.Supply normal form of proteins encoded by wild-type allele . D. Gene silencing

Why do stem cells that have been damaged prefer apoptosis over repairing the genome?   a. Stem cells cannot repair the damaged genome b. The repair machinery is not perfect and therefore prone to make mistakes c. They don't d. None of the above