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Essay about albinism
Essay about albinism
Genetic defects lead to albinism
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Albinism is a very serious disease that could end up in death. Albinism is a recessive inherited defect in melanin, which is metabolism in which pigment is absent from skin, hair, and eyes. Albinism in hair, skin, and eyes is called oculocutaneous albinism. Humans that have oculocotaneous albinism are not able to produce melanin. These people have white, yellow, or yellow brown hair, very light ( usually blue ) eyes, and very pale skin. Their eyes may appear pink because they have very little pigment.
Albinism just in the eyes is called ocular albinism. Which is a dark biological pigment that is formed as an end product of the metabolism of the amino and tyrosine.
People with ocular albinism, which only the eye lacks melanin pigment, while everything else appears normal. People who have this have a variety of the eye disorders because of the lack of pigment impairs normal eye development. These effected are extremely sensitive to bright light. Treatment for ocular albinism includes the use of visual aids and surgery for strabismus.
Albinism is very rare in humans. There is a one to seventeen thousand chance that a person will have Albinism. Because of albinism if a person with the disease is exposed to ultraviolet rays they get very sick or get cancer.
Albinism occurs in all races, from white, black, to asian. Regardless of skin color the people are still paler than normal people. Their hair is white and they have pinkish red eyes.
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There is another type of albinism which is called Hermansk-Pudlak syndrome. In the is type of the disease there could be problems with bleeding, and with lung and bowel disease as well. This is a very rare and uncommon type of albinism.
For almost all types of Albinism both parents or mates must carry an albinism gene in order for their child to have albinism. Because the body has two sets of genes, a person may have normal pigmentation but carry the albinism gene. If a person has one normal gene and one albinism gene that is still enough to pass the disease on to their children. Even if both parents have the albinism gene it does not mean they have the sickness. The baby will have a one out of four chance of getting the disease. This is inherited by autosomal recessive inheritance.
When people hear African history their initial thoughts are slavery and segregation, yet there is more to African history than those two events. The reason why many people would only know the American portion of African history is because that is what is predominately taught in most schools. In the movie Hidden Colors 2: The Triumph of Melanin, it goes deeper into the cultural beginning of the African history. As mentioned in the film “90% of African history makes up everything”. Hidden Colors 2 is an exceptional and informative documentary that extends to telling the hidden truths behind the suppression of the black culture.
The hair of the scalp is longer and more flexible, while the hair of the eyebrows tends to be short and stiff. Oval shaped hair shafts produce wavy hair, flat hair shafts create curly hair and hair shafts that are perfectly round create straight hair. There are also different types of melanin, a natural compound responsible for the production of color in the eyes, skin and hair. There is yellow, brown and black melanin, each produced by melanocytes located at the follicle base. With age, melanin production decreases, causing greying of hair. (Applegate & Saunders, 2001, pp
Albinism happens when one of numerous genes is fault. Each of these genes offers orders for making one of several proteins involved in the making of melanin. This imperfection may outcome in the nonappearance of melanin production or a cheap quantity. Melanin is produced by cells called melanocytes, which are found in your skin and eyes. The amount of coloring varies. Some people gain a little pigmentation in their hair or eyes when aging. Some develop pigmented spots on their skin. A person with total absence of melanin is called an albino. One with only a small amount of melanin is described as albinoid. (What is Albinism by Right Diagnosis April 22, 2014).
Albinism is a genetic disorder that is caused by the lack of pigments. Sometimes it only affects the eye which is called ocular albinism. You can receive albinism from your genetics. You can be an albino in your eyes, skin or hair. It affects people of all races and all around the world. Studies show one in 20,000 people worldwide have some form of albinism. Certain forms of albinism are more common in some populations. Most common form of albinism is OCAZ and is found in one in 36, 0000 Caucasians in the United States. There are four types of albinism; type 1 is characterized by white hair, very pale skin, and light colored eyes. Type 2 is less severe their skin is usually a creamy white color and their hair could be a light yellow, blonde or light brown. Type 3 has a form of albinism called “rufous oculocutaneous albinism” this usually affects dark-skinned people. They have reddish-brown skin, ginger or red hair and hazel or brown eyes. Type 3 has milder vision problems. Type 4 has the same symptoms similar to type 2. Types 1 and 2 are the most common forms; types 3 and 4 are not as common.
Human pigmentation is influenced by hemoglobins within blood vessels in the skin, carotene and melanins. Melanin, the basis of pigmentation, can be found in the forms of eumelanin and phaeomelanin. Eumelanin is the brown-black pigment located in the skin, hair, and eyes. Phaeomelanin is a yellow to reddish-brown pigment found in small quantities within the skin, eyes, and red hair. Because of these two pigments, to a greater or lesser degree, we have the variation in human pigmentation that is seen today.
Over time, there has been an expansion in our knowledge of the ways in which humans develop and learn. It is now known that babies are beginning to learn even before they are born. I often find myself wishing I had known these things when my children were developing. We all want our children to be the best that they can be; with some knowledge of how children learn and the sequential steps they must go through in many areas of development, we can provide many experiences at home to help them reach their potential. When educators discuss children 's development, they usually talk about physical, mental, social, and emotional development.
There is a myth that people with albinism have red eyes. While some people have violet or reddish eyes the majority is blue and some even have brown or hazel. The albinism that affects only the eyes is called ocular albinism. It reduces color to the iris, or can cause visi...
Gecas, V. (1989). The Social Psychology of Self-Efficacy. Annual Review of Sociology. 15, pp. 291-316.
People nowadays are lack on having confidence that they can do something; they doubt their own abilities. Self-efficacy is considered to be one of the positive psychology traits that we should adopt and have. It helps us to achieve the goals that we want; it will lead us to success. A person with high self-efficacy can help to work harder and can make their own motivation to achieve their desires. Self-efficacy determines how people feel, think, motivated themselves and behave. This concept is related to the beliefs that people have about their capacity to complete a specific task. (Bandura, 1993, 1994; Bandura & Locke, 2003). But having this self-efficacy, we should make sure that it is connected on our beliefs and not something that we are opposition to. According to Henry
The theory of self- efficacy is the belief that a person has for themselves of how capable they are in confronting a given situation. Alberto Bandura, the creator of the theory, states that it has a variety of influences that can either help
People with ocular albinism may have slight lightening of hair and skin colors as well, compared to other family members. At present, researchers have found 10 different types of oculocutaneous albinism, and five types of ocular albinism. Newer laboratory research studying DNA has shown that there are numerous types of changes in the genes of those with albinism, including within families. The most common types of oculocutaneous albinism are called "ty-negative" and "ty-positive". Persons with type-negative albinism have no melanin pigmentation, and more difficulty with vision.
Self-efficacy, according to the text, is described as an “expectancy or belief about how competently one will be able to enact a behavior in a particular situation “(Friedman & Schustack, 2012, p.213); without the belief that one’s actions can produce a desired outcome, there no motivation to attempt to. Perhaps this is why there is only resignation as Susanna enters the institution. Self-efficacy seems to lean more towards the nurture side of the nature/nurture debate. Achieving self-confidence, and the belief in one’s self, and their capabilities is a milestone for young adults. In the case of the movie, we witness Susanna’s journey form a troubled, self-centered apathetic teen into a caring, healthier person; capable of realistically looking at herself and the world around her.
The concept of self-efficacy is grounded in Bandura’s (1977) social learning theory. Bandura (1994) defines perceived self-efficacy as “people’s beliefs about their capabilities to produce efforts” (p. 71). In essence, one having strong self-efficacy experience increase in motivation, accomplishment, and personal well-being ( Bandura, 1994). Those with a low sense of self-efficacy, on the other hand, often suffer stress and depression; unbelieving of their capabilities and often succumbed to failure (Bandura, 1994).
Vygotsky believed that children learn through social interaction with adults. He also believed that dialogue with others help a child in promoting cognitive development. Adults, teachers and peers have major impact on the child development of mental processes.
The second one is beta thalassemia. This occurs when similar gene defects affect production of the beta globin protein. It happens mostly in people of Mediterranean origin, Chinese, other Asians, and African Americans. You need both alpha- and beta-globin to make hemoglobin. If you have one damaged gene, you may have mild anemia and probably won't need treatment. This is called beta thalassemia minor or beta thalassemia trait. It happens when you get a normal gene from one parent and a thalassemia gene from the other. When both genes are damaged, it means you got a thalassemia gene from each parent. You may have moderate or severe anemia. If you have moderate anemia, you may n...