PLEASE ANSWER ALL QUESTIONS AND READ INSTRUCTIONS! Thank you Answer the followin
ID: 487085 • Letter: P
Question
PLEASE ANSWER ALL QUESTIONS AND READ INSTRUCTIONS! Thank you Answer the following questions in a sentence or two for each part of the question. You aren't graded by length of the answer, so be direct. We expect you to write in complete sentences, with proper grammar and punctuation. Explain the answers in your own words DO NOT directly quote your sources. For each question, include a list of all the sources you used to research that question. If you were writing formally (like in the final part of this Project), you would need to follow the citation formats we discussed in class, but for this assignment, you do NOT need to indicate which information came from which source and citation format is not important (a website name and its URL is sufficient). Bring printed copy in recitation. 1. What is a gene composed of? Where do genes reside in the cell? What do genes produce? 2. Do all genetic mutations cause diseases or disorders? Why or why not? 3. Which gene is mutated in cystic fibrosis? What chromosome is it located on? 4. Why would prospective parents want to be tested for cystic fibrosis mutations? 5. What is called penetrance in genetic diseases?
Explanation / Answer
1. A gene is composed of sequence of nucleotides. Genes are part of chromosomes present in nucleus of a cell. Genes produce polypeptides depending on the sequence of nucleotides.
2. No, because either function of protein does not change even after the gene sequence is altered or it is repaired by enzymes before gene expression.
3. CFTR (Cystic Fibrosis Transmembrane Conductance Regulator) gene present on chromosome 7.
4. It is a autosomal recessive disorder. A person suffers from this disease when both the copies of CFTR gene inherited from each parent are recessive.
5. It is the proportion of people with particular genotype who exhibit symptoms of a genetic disorder.
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