Medical genetics and cancer - Inheritance patterns of genetic diseases
10 important questions on Medical genetics and cancer - Inheritance patterns of genetic diseases
What are seven observations that are consistent with the idea that a disease is caused by the inheritance of mutant genes?
- An individual who exhibits a disease is more likely to have genetic relatives with the disorder than are people in the general population.
- Identical twins share the disease more often than nonidentical twins.
- The disease does not spread to individuals sharing similar environmental situations.
- Different populations tend to have different frequencies of the disease.
- The disease tends to develop at a characteristic age.
- The human disorder may resemble a disorder that is already known to have a genetic basis in an animal.
- A correlation is observed between a disease and a mutant human gene or a chromosomal alteration.
What are dizigotic (DZ) twins?
What does a high concordance mean?
- Higher grades + faster learning
- Never study anything twice
- 100% sure, 100% understanding
For my 1st exam I got a C. Then, I started looking for ways to learn better and I came across Study Smart. Since then I have scored a A+, A, A- and another A. I highly recommend it to everyone who wants to hear it. I am so happy with it!!
I was struggling to finish all my first-year subjects for 3 years. Then I discovered Study Smart, which helped me to finish all of them within 3 months.
Because of StudySmart, things are going well in many ways. Before, I always had study stress and no time for anything. Now I feel calm and confident (because of the program). I used to score a B, now I usually score an A or A+.
Hey Chris, I really want to thank you very much for developing the platform, I usually got around C for my exams, now I scored an A+, an A and a A- !!
Since using Study Smart, my average has increased significantly. I even completed a statistics course with a A+ while I'm bad at statistics. I took on extra courses this year, because of Study Smart. Thanks so much!
Ever since I started studying with StudySmart I passed all my exams !!! No more re-sits!! At first, I was happy with a pass and now I only get good grades. Many thanks!
I aced all the courses I studied with Study Smart. For law, I first scored a D, and now an A! I’m 100% sure that I’ll pass all the courses I study with Study Smart.
I always thought I studied well. My grades were fine. I could never have imagined that applying these study skills would have such a huge and direct impact on my grades, my speed and the pleasure I have in learning.
For the first time, I finally feel totally confident about the way I learn. I have the perfect overview and make great progress in terms of speed and the grades I get. Thanks, Chris!
I immediately started to enjoy learning again, and my grades soared. All of a sudden, everything went better. I highly recommend Study Smart to all students..
Being able to create my materials online made the process of studying so much smoother and quicker. I no longer have to spend a huge amount of my time on creating my summaries.
At first, my notes were a mess. Now I use Study Smart to take my notes in a perfectly structured way. It helps me to save a lot of time and do other things I enjoy.
Students that study with Study Smart get better grades. The system applies all the learning methods in such a way that both well-performing students and students who struggle perform much better.
Hi Chris, I would like to thank you very much. Last year I scored C on a course, and this year I got an A+ thanks to your method! Thank you very much!
The largest effect is that my child is more enthusiastic about school! Every parent wants their children to be happy at school, Study Smart made it happen.
In high school, I failed several exams, and that has really changed now. I actually needed this tool very much back then. Since I started studying with StudySmart, I haven't had any D's. My average score is now an A and those are results I would have never had in the past
With my old method, I passed only 3 out of 8 courses. Since I started taking my notes digitally in Study Smart, I have passed all my courses on the first try. For me, StudySmart takes away the stress of wondering if I will pass or not.
Thanks to StudySmart, I passed all my exams, and with better grades than before! On top of that, I have mastered a very good study method now, which I am confident will help me earn my degree.
What are four common features of autosomal recessive inheritance?
- Frequently, an affected offspring has two unaffected parents.
- When two unaffected heterozygotes have children, the percentage of affected children is (on average) 25%.
- Two affected individuals have 100% affected children.
- The trait occurs with the same frequency in both sexes.
What are five common features of autosomal dominant inheritance?
- An affected offspring usually has one or two affected parents.
- An affected individual with only one affected parent is expected to produce 50% affected offspring (on average).
- Two affected heterozygous individuals have (on average) 25% unaffected offspring.
- The trait occurs with the same frequency in both sexes.
- For most dominant, disease-causes alleles, the homozygote is more severely affected with the disorder. In some cases, a dominant allele may be lethal in the homozygous condition.
What three observations reveal an X-linked recessive inheritance?
- Males are much more likely to exhibit the trait.
- Mothers of affected males often have brothers or fathers who are also affected.
- Daughters of affected males produce, on average, 50% affected sons.
What feature(s) of this pedigree indicate(s) X-linked recessive inheritance?
What is the pattern for X-linked dominant inheritance?
- Only females exhibit the trait when it is lethal to males.
- Affected mothers have 50% chance of passing the trait to daughters.
What is locus heterogeneity?
What feature(s) of this pedigree indicate(s) recessive inheritance?
The question on the page originate from the summary of the following study material:
- A unique study and practice tool
- Never study anything twice again
- Get the grades you hope for
- 100% sure, 100% understanding
