Today we went through as many of the study island questions as we could together as a class to review for our exam tomorrow. Remember, you guys have access to this. The more you practice the more likely you are to do well on the test tomorrow.
When you go to study island click on the "heredity review" assignment under your biology assignments.
(username firstnamelastname.ecasd password: probably your student ID or whatever your changed it to!!!)
Sample Open Ended Questions:
1. When you go to the doctors you are asked for your own medical history and that of your family. This is so that the medical personnel can determine your risk factors for certain genetic disorders. This allows them to do TWO things, both make sure to test you early for a disorder you may in fact have but have not yet shown symptoms for AND to give you advice on how to prevent the onset of some disorders. Describe below both of the situations.
1st describe why a doctor would be concerned about the risk of you having a recessive disorder even if neither of parents have that disorder but some of your aunts and uncles do????
2nd describe why even if you have the genes for a disorder, living a certain lifestyle could prevent you from actually having those genes expressed? (in this case I am looking for a explanation about how cellular environment affects gene expression)
2. Mr and Mrs Smith have devised a plan to make some money. They know that type O blood is a hot commodity so they are planning on conceiving children until they have one with type O blood and then have that child be its own personal "blood bank" shall we say. (not very ethical, I know.... but...... its a tough economy right???)
Mrs. Smith has blood type A. Her father has blood type A, and her mother has blood type B. If Mr. Smith has blood type AB (Both of his parents have type AB blood). They go to a genetic counselor to see their chances. As their genetic counselor you are obligated to go over Mr & Mrs. Smith's Genotype, Both of their parents genotypes and therefore they can give them the probability that they will have a child with type O blood. Describe what you would tell them about their chances of having a type O child and WHY (include ALL genotypes Mr/Mrs. smith, both their parents, possible genotypes of offspring)
still confused about blood type genetics??? check this out:
https://www.youtube.com/watch?v=9eLDuRHtxDY
3. Color blindness is an x-linked recessive disorder. A man who is color blind has a child with a woman who is not color blind. Their first son is not color blind, their second son is and they are hoping for a little girl to complete their family. What are the chances they will have a girl that is color blind?
(when doing this make sure to include all information about both parents, the two boys and the possible outcome of girls)
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