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Response 1 Grandma’s Experiences Leave a Mark on Your Genes “Your ancestors’ lousy childhoods or excellent adventures might change your personality, bequeathing anxiety or resilience by altering the Nursing Assignment Help

Response 1 

Grandma’s Experiences Leave a Mark on Your Genes

“Your ancestors’ lousy childhoods or excellent adventures might change your personality, bequeathing anxiety or resilience by altering the epigenetic expressions of genes in the brain.”

By           Dan Hurley     |Thursday, June 25, 2015

Please be sure to summarize and critique all 3 pages of this article. 


respond 2 

Listen to the following 30-minute podcast on YouTube: “Science Friday Interview with Carl Sagan – ‘Science Is a Way of Thinking’ (1996)”       


at least two of the following videos:

  1. “Why the future of science depends on creativity and emotion | NASA’s Michelle Thaller | Big Think” (4:29 minutes)
  2. “Three major thought processes in scientific creativity” Albert Rothenberg (2:36 minutes)
  3. “Jeremy Nathans (Johns Hopkins/HHMI): Creativity in Science” (7:02 minutes)
  4. “Carl Sagan’s most important lesson about science | NASA’s Michelle Thaller | Big Think” (2:15 minutes)


at least any 20 minutes of: “The Mad Science of Creativity” (1:26:32 minutes). The intro for the event is about 10 minutes long and not necessary to watch in order to appreciate any of the storytellers’ presentations.

Then, provide a brief summary and reaction to what you have observed of these recordings. In addition (within your 300+ word critique), address both of these questions:

  1. What are some ways that scientific thinking and scientific endeavors (large or small) happen in every-day life? To answer this question, you may write about your personal experience(s) or more general occurrences.

b. What role, if any, do you see creativity playing in science?

response 3 

“A pill for longevity could become reality…”The following article is from 2006. Yes, it’s an old article. I still like to include it as an option, however, because of its interest and relevance to our module — and to invite you to see what has happened in this research area since 2006. You are welcome to include any newer information you find (from a reputable source, of course) in your critique, or critique that newer article instead of this one. Read and critique the article pasted below:     Many Happy Returns     by Caroline Williams   Source: New Scientist; 6/3/2006, Vol. 190 Issue 2554, p41-41, 3/4p, 1c   Title: MANY HAPPY RETURNS., By: Williams, Caroline, New Scientist, 02624079, 6/3/2006, Vol. 190, Issue 2554  Database: Academic Search Premier   A pill for longevity could become reality once we master the genetics and physiology of ageing   Looking for a magic pill to help you ward off ageing? No problem. With just a few clicks of your mouse you can buy enough snake oil to last your newly extended lifetime, complete with a list of promises as extravagant as the price tag.   Today’s booming market for anti-ageing products is founded on little more than hype and hope, but things are set to change. In the past few years, at least 10 gene mutations have been identified that extend the lifespan of mice by up to 50 per cent. Encouragingly, these long-lived supermice are no sickly rodent geriatrics: they remain healthy and active long after their litter-mates have succumbed to the many diseases of old age. The major hurdle in the quest to achieve similar results in humans is understanding exactly how these genes and others like them influence longevity.   One key factor, in mice at least, seems to be the production of growth hormones in early life. In 1996, the first mutation found to extend life in mice was one engineered into the so-called Ames dwarf mouse. Ames mice were given a mutation on the Prop-1 gene that affects the endocrine system, leaving them with a deficiency of growth hormone, among other hormones. It turned out they live up to 50 per cent longer as a result.   Five other mutations that reduce production of insulin-like growth factor (IGF-1) have since been found to have a similar effect on longevity in mice. Something similar appears to happen in dogs. Small breeds, which have low levels of IGF-1 in early life, can live up to twice as long as larger dogs and remain free of signs of age-related disease until later in life.   Small is youthful   Could this point to the elixir of youth in humans? Hard evidence is scarce, but some as yet unpublished research suggests a subgroup of centenarians has a variation in one IGF-1 gene. Another gene variant, known as the Laron mutation, which affects the receptors for growth hormone and so leads to dwarfism, has also been anecdotally linked to longevity. Many experts see growth hormones and their receptors as possible targets for future anti-ageing drugs. The big obstacle is likely to be finding ways to sidestep the serious problems associated with growth hormone deficiencies, such as dwarfism and infertility.   An alternative and perhaps more promising route to longevity lies in finding ways to increase the resistance of cells to stresses such as the damage caused by free radicals. Many supposed anti-ageing compounds sold on the internet claim to work by providing antioxidants to mop up damaging free radicals, which are produced by the cell’s mitochondria when they make the ATP that fuels the cell’s activities. Though there is no evidence that popping antioxidant pills can hold back the years, delivering antioxidant enzymes direct to the mitochondria might do the trick. Experiments in mice show that this seems to protect mitochondrial DNA from mutations, extending lifespan by 20 per cent (New Scientist, 14 January, p 42).   To protect nuclear DNA, several different approaches are looking promising. Hot off the press comes research indicating that an aberrant form of a protein called lamin A plays a key role in damaging the nucleus and its contents, leaving it looking wrinkled (Science, DOI: 10.1126/science.1127168). Researchers from the National Cancer Institute in Bethesda, Maryland, were able to turn the clock back in old cells by blocking the production of this protein. Now they want to find out whether drugs that do the same thing can slow down ageing in animals.   Nuclear DNA is particularly susceptible to damage during cell division, when it is rearranged. In 1997, Lenny Guarente and David Sinclair from Harvard Medical School in Boston reported that this damage can cause ageing in yeast. They have since found that yeast with an extra copy of a gene called SIR2, which helps prevent this genetic rearrangement, lived between 30 and 50 per cent longer. Convinced that he has found a “longevity gene”, Sinclair is now studying the life-prolonging effects of the equivalent mammalian gene, SIRT1, in transgenic mice. With the mice still only 2 years old, it will be another couple of years before we know whether this approach works.   Meanwhile in humans there are tantalising hints that yet another member of this family of genes, dubbed the sirtuins, is linked to longevity. In 2003 a study led by Giovanna De Benedictis at the University of Calabria in Arcavata di Rende, Italy, reported that centenarian men were more likely than the general population to have two copies of the SIR3 gene.   Stress in a bottle   Can we harness the rejuvenative power of sirtuins? Sinclair is hopeful. Under normal circumstances, sirtuins are activated when cells are stressed, but he has found a set of plant molecules that bind to the SIR2 protein in a way that mimics the effects of mild stress in cells, so increasing the activity of sirtuin genes. Feeding mice one of these compounds, called resveratrol, which is found in red wine, suppresses the growth of cancerous tumours. Resveratrol has also increased the lifespan of every organism it has been tested in so far: yeast, nematodes, flies and fish. Sinclair’s next step it to find out whether it has the same effect in mice.   Other researchers believe their best chance lies in a fuller understanding of the physiology of ageing. To that end, Richard Miller from the University of Michigan in Ann Arbor is studying cells from another strain of lab mice, called Snell dwarf mice, in the hope of finding out how they resist attack on many fronts, including free-radical damage, heat stress and DNA mutations. Meanwhile, the US National Institute of Aging is funding a long-term project to test the effects of a slew of compounds with potential to manipulate physiological pathways implicated in ageing. Results of the first five trials on mice are due later this year. Wannabe centenarians, watch this space.  

How to Solve Response 1 Grandma’s Experiences Leave a Mark on Your Genes “Your ancestors’ lousy childhoods or excellent adventures might change your personality, bequeathing anxiety or resilience by altering the Nursing Assignment Help


In this assignment, we will be evaluating and critiquing three different sources related to medical topics. The first source is an article titled “Grandma’s Experiences Leave a Mark on Your Genes” which discusses how the experiences of past generations can impact our genes. The second source is a series of recordings including a podcast and several videos that explore the role of scientific thinking and creativity in everyday life. The third source is an article from 2006 titled “A pill for longevity could become reality” which examines the potential for developing a pill that can extend lifespan.

Response 1:

The article “Grandma’s Experiences Leave a Mark on Your Genes” explores the concept of epigenetic changes in the brain due to the experiences of previous generations. The author suggests that these experiences can alter the gene expression and potentially impact our personality traits, such as resilience or anxiety. The article presents research studies conducted on animals, showing how trauma or stress experienced by previous generations can influence the behavior and genetic makeup of subsequent generations.

Overall, the article provides an interesting perspective on the potential influence of ancestral experiences on our genes. It highlights the importance of understanding the role of epigenetics in shaping individual and collective traits. However, it is important to note that much of the research discussed in the article is based on animal studies, and further research is needed to fully understand the implications for humans.

Response 2:

The recordings provided explore the intersection of scientific thinking and creativity in everyday life. The Science Friday Interview with Carl Sagan emphasizes the importance of curiosity and critical thinking in scientific endeavors. The other videos and podcast also discuss the role of creativity in scientific breakthroughs and the importance of approaching scientific problems with an open mind.

Scientific thinking and endeavors happen in everyday life in various ways. For example, when faced with a problem or a question, we often rely on logical reasoning and evidence-based thinking to find solutions. In our personal lives, we may engage in scientific thinking when making decisions about our health, such as researching different treatment options or evaluating the effectiveness of different medications. Furthermore, scientific thinking is essential in fields such as engineering, where problem-solving and innovation require a systematic and evidence-based approach.

Creativity plays a crucial role in science by allowing scientists to think beyond conventional boundaries and come up with novel solutions or theories. It provides the freedom to explore new perspectives and challenge existing ideas. Scientific creativity enables scientists to make connections across different disciplines, leading to breakthrough discoveries and advancements. Additionally, creativity is necessary in the design and execution of experiments and the development of new technologies.

In conclusion, scientific thinking is a fundamental part of everyday life, shaping our decision-making processes and problem-solving abilities. Creativity, on the other hand, fuels scientific innovation and helps scientists push the boundaries of knowledge.

Response 3:

The article “Many Happy Returns” discusses the potential for developing a pill for longevity by understanding the genetics and physiology of aging. The article presents research on gene mutations that have been found to extend the lifespan of mice, highlighting the role of growth hormones and other factors in longevity. It also mentions potential approaches, such as increasing cells’ resistance to stress and protecting nuclear DNA from damage.

Although this article is from 2006, it raises intriguing questions about the possibilities of extending lifespan through genetic and physiological interventions. Since then, further research has been conducted in this area, and it would be important to assess more recent studies to get a current understanding of the progress made.

Overall, the article provides a thought-provoking perspective on the potential strategies for addressing aging and extending lifespan. However, it is essential to approach these claims with caution and consider the ethical implications surrounding such interventions. Additionally, further research is needed to fully understand the complex mechanisms of aging and develop safe and effective interventions.

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