Mutation Content

In the living cell, DNA undergoes frequent chemical change, especially when it is being replicated (in S phase of the eukaryotic cell cycle). Most of these changes are quickly repaired. Those that are not result in a mutation. Thus, mutation is a failure of DNA repair.

Effect Content

Story Content

Here is a story about a patient of achromatoblepsia. she named Heather. 

My name is Heather and I’m a rod monochromat, and have Incomplete Achromatoblepsia. My parents first noticed my vision problems when I was a baby and I’d always stare at the sun, which was most likely the only thing I could see on a bright sunny day. So my mom put large brimmed bonnets on me. I would also squint in bright light and the nystagmus was apparent early on too.

After learning to walk I would often run into glass windows and doors that lead outside. I’d trip over curbs and cracks. And of course I couldn’t learn my colors. So my parents were told to go to a specialist in Kansas City, MO and at age 3-4 I was diagnosed with “Cone dystrophy”, which years later I realized after further research was a broad diagnosis, and that I was in fact an Achromat.

1.What is achromatoblepsia?

Achromatoblepsia is a medical syndrome that exhibits symptoms relating to at least five conditions. The term may refer to acquired conditions such as cerebral achromablepsia, also known as color agnosia, but it typically refers to an autosomal recessive congenital color vision condition, the inability to perceive color and to achieve satisfactory visual acuity at high light levels (typically exterior daylight). The syndrome is also present in an incomplete form which is more properly defined as dyschromatopsia. It is estimated to affect 1 in 40,000 live births worldwide.

https://en.wikipedia.org/wiki/Achromatopsia

From Wikipedia

2.What symptoms of achromatoblepsia?

Achromatopsia is the inability to see color. In the most severe form of the disease, called complete achromatopsia, the patient cannot see any color at all. Incomplete achromatopsia is a milder form of the disease where the patient has impaired ability to see color rather than a complete loss of color vision.

Other vision problems may also occur, and these can vary in severity among patients, depending on whether the patient has complete achromatopsia or incomplete achromatopsia. These symptoms may include blurred vision, nystagmus (involuntary eye movements, such as shaking or wobbling), or photophobia, which is a heightened sensitivity to light that may cause discomfort or pain.

1. What is DNA. Describe it’s structure.

DNA is a molecule that carries most of the genetic instructions used in the development, functioning and reproduction of all known living organisms and many viruses. DNA is a nucleic acid; alongside proteins and carbohydrates, nucleic acids compose the three major macromolecules essential for all known forms of life.

2. Explain what each of the following model pieces represents: licorice, marshmallows( green, yellow, pink, orange), toothpicks.

Licorice: Sugar and phosphate.

Marshmallows: Adenine (yellow), thymine(orange), cytosine(green), and guanine(pink). Yellow marshmallows were pair with orange marshmallows and green marshmallows pair with pink marshmallows. That meant adenine pair with thymine and cytosine pair with guanine.

Toothpicks: Steps of the ladder which are the paired nitrogen bases.

3. Yes. Because this model is looks like DNA, it helps me to learn DNA’s structure.

This APP named ” The Chemical Touch”.

Explore the properties of the elements and the standard amino acids with The Chemical Touch. A touch sensitive periodic table on one side and amino acid companion on the other, The Chemical Touch provides a wealth of information right at your fingertips. In addition to atomic mass, properties such as the density, melting point, boiling point, atomic radius, and electronegativity can be selected to recolor the periodic table to display trends in these common properties. Having exhausted the displayed information, click the internet button to see the Wikipedia page for the selected element or amino acid.

How will this APP help me in science?

This APP teaches through the periodic table. It include all kinds of element, you can find information of elements whatever you want.

Is it helpful for me?

Yes, this APP is best for students, you can touch one of these element’s icon to learn more about this element. when I use this APP, I can find information easily and comprehensive. If I can’t understand clearly, I can click the internet button to see the Wikipedia page for the selected element or amino acid.

What platforms does it run on?

It runs on iPhone, iPad and iPod touch.

Is that convenient ?

I think it isn’t convenient, because this APP requires iOS 2.2.1 or later. The second reason is this APP need WIFI to run on.

Can younger people use that?

Yes, this APP is used to more than 4 years old children.

Is it efficient for me?

Yes, it helps me memorize elements information and how to use them. It just like a dictionary in science, I can got the knowledge of elements quickly when I need to find them.