HMB265H1 Final: Study notes for lecture 01

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redtermite204

18 Apr 2011

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HMB265H1 Full Course Notes

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Medicine: inheritable diseases, contagious diseases with genetic component. variation in dna influence variation in traits mapped on chromosomes, thus chances of getting the condition: understanding disease"s genetic basis/cause for treatment and screening, ultimately, medical genetics. diagnose presymptomatic disease, and predict child"s likelihood of getting it. develop gene therapy (replacing diseased gene with normal) Agriculture response: crop and livestock improvement, genetic diversity affects long-term survival of crops and livestock, genetic engineering increasingly common. Conservation: habitat destruction reduces genetic diversity, genetic diversity affects ability to adapt to changing environments, low genetic diversity increases exposure to genetic disease. Biology: dna encodes proteins, which affect traits, understanding organism development, behaviour, adapting, genes cannot determine personality. Ex. type ii diabetes: numerous genes identified to increase risk minimally, diet and lifestyle have major impact. Continuum degree of genetic v. environmental influence. How do we know what we know? www. notesolution. com. Lecture 01: genetics and genomics of human biology.

Related Questions

Imagine that you have a particular genetic trait and that you have four children. Two of the four children also possess this trait. Meanwhile, the other biological parent of your children does not possess the trait.

Explain why you think the trait in the scenario is dominant or recessive.

Based upon your response, describe why it would or would not be possible for the trait in the scenario to âskipâ a generation.

Patterns of inheritance within organisms like pea plants, fruit flies, mice, and others are somewhat easy to determine since their mating practices can easily be controlled. Apart from controlling who mates with whom, what other characteristics make species like these ideal for studying genetics?

Select and describe a health problem that you believe has a genetic component at least partially inherited. If you do not identify an inherited health condition within your family, choose a disease that interests you or impacts a friend or other family member. Would you be interested in having genetic testing to determine whether you carry a genetic mutation for a particular disorder or a genetic predisposition for a disease? Why/why not? What are the advantages and disadvantages of determining your predisposition?

Explore the current state of research for the health problem you selected. Focus on one of the following to discuss as they relate to the genetics of the disease:

Cause

Testing/Screening/Prevention

Treatments/Therapies/Cures

Why are diseases of the blood better targets for treatment bygene therapy than are many other genetic diseases?

aquamarineguinea-pig889

A 26-year-old male medical student who has no neurological or psychiatric problems undergoes genetic testing to determine if he has a mutation in his Huntington Disease (HD) gene. Several of his maternal relatives, including his mother, have well documented HD. His test results are: HD allele 1: 17 repeats HD allele 2: 43 repeats The most accurate interpretation of this test is:

A He has inherited one HD gene mutation, but given that he currently has no symptoms by the age of 26, it is most likely that he will never develop the disease.

B He is an asymptomatic individual who inherited an HD gene mutation and will develop symptoms of the disease if he lives long enough.

C These test results are inconclusive and therefore his 50/50 risk of inheriting the disease from his mother has not been modified by the test.

D He has HD and should seriously consider another occupation as he will never be able to practice medicine competently.

E Luckily, he has one normal allele. Therefore he is only a gene carrier and will never develop the disease.

HMB265H1 Final: Study notes for lecture 01

HMB265H1 Full Course Notes

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