Why is it difficult to study whether a trait is due to epigenetic changes or due to something else? (Hint: What are the other things that may cause disease?) (Minimum of 2 complete sentences.)
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Why is it difficult to study whether a trait is due to epigenetic changes or due to something else? (Hint: What are the other things that may cause disease?) (Minimum of 2 complete sentences.)
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- What degree of differences would you expect to see in the DNA base sequences and epigenetic marks of monozygotic twins? a. Similar differences in DNA base sequence and epigenetic marks b. Greater differences in DNA base sequence than epigenetic marks c. Greater differences in epigenetic marks than DNA base sequence d. No differences in either DNA base sequence or epigenetic marksA representation of the distance between genes or genetic markers is called a?What is the most common symptom in a genetic disorder and why? Do all people exhibit this symptom of a genetic disorder?
- Do genes have a role to play in epigenetics and variations in epigenetic patterns between individuals? Explain your answer.Why does a loss or an excess in genetic material lead to the expression of an abnormal phenotype?Which of the following is associated with chemical modifications to chromosomes that label alleles as coming from the mother or father? a. Multiple alleles b. Extranuclear inheritance c. Epigenetic marks d. Small non coding RNAs
- A young lady requested pre-marital genetic counselling because her sister had died in infancy of gangliosidosis, an autosomal recessive disease. What is the risk that this young lady has similarly affected offspring? What advice should be given?A scientist does an experiment in which she removes the offspring of rats from their mother at birth and has her genetics students feed and rear the offspring. Assuming that the students do not lick and groom the baby rats as the mother rats normally do, what long-term behavioral and epigenetic effects would you expect to see in the rats when they grow up?A couple who are both heterozygous for an autosomal recessive mutation that is narrowly expressed and fully penetrant are planning on having three children. What is the probability that one their children will be normal (unaffected) and two children will have the recessive mutant phenotype? Show your work. Please answer this question using the Bayes’ Theorem
- What type of epigenetic change is responsible for genomic imprinting?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-spanA couple is planning a family, but since each has a brother having the sickle-cell disorder, they are worried that their kids might develop the disorder too. Neither of them nor their respective parents have the disorder. Which of the following will be your smartest advice as a genetic counsellor? One of four of their children can be expected to have sickle cell. It is possible that none of their kids will have the disorder, but tests should be carried out on both of them to confirm. All of their children will have sickle-cell disorder. There is no chance of any of their kids having sickle cell.
