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Albinism
An inherited disorder in which there is no pigmentation in skin, hair or eyes, due to the absence of melanin, the substance that gives skin its color.
Question: Albinism...............? Albinism (lack of skin pigmentation) is caused by a recessive autosomal allele. A man and a woman, both normally pigmented, have an albino child together. The couple decides to have a second child. What is the probability that the second child will be albino?
a. 0%
b. 25%
c. 50%
d. 75%
e. 100%
Answer: (b). The parents are heterozygous. The Punnett square is Nn x Nn:
_____N____n___
N___NN___Nn__
n___Nn____nn___← this child is albino
EVERY child has a 25% of being an albino.
Question: albinism??? i have to answer thes questions about albinism. i need reliable sorces ( so can you please list the websites used)
i have to answer these about albinism.
1) Describe the difference between genetic disorders and infectious diseases
2) Discuss how albinism got it's name
3) Describe how people get this disorder and identify the chromosome it is located on.
4) Describe the population this disorder affects
5) How and when is this disorder usually diagnosed?
6) What are the symotoms of Albinism? Describe how these symptoms may change
7) Describe current treatments for Albinism
8) Is Albinism curable?
9) Are there any new discoveries related to this disorder?
10) What are some interesting facts or statistics about albinism?
yup. i'm taking bio
Answer: I'm gonna guess you're a freshman in high school and studying about DNA? :D
http://en.wikipedia.org/wiki/Albinism
It's reliable.
Question: What kind of skin problems do people with albinism have? I'm doing some research for a project on genetics, and I was wondering what sort if specific problems do people with albinism have. I know they burn easily and are at risk for skin cancer, and obviously they are pale, but is there anything I'm missing?
Answer: Well, I know it's not skin, but they also have bad vision. Don't know if it helps. http://www.albinism.org/
Question: How many recessive alleles must a person have to have albinism? Albinism is a recessive trait in humans that is controlled by a single gene. How many recessive alleles must a person have to have albinism?
A. 0
B. 1
C. 3
D. 2
Answer: c
Question: Does albinism affect certain populations more than others? i need to do a project with my partner on albinism but we cant find the answer for this one please help!!!!!!!!!!!!!!!!!!!!!!!!!
please leave a website for a resource!
Answer: No, albinism is caused by the lack of a protein that produces meladine and therefore the pigment. Although of course if the parents are albino this increases the likelihood. Oh, it may interest you to know that Albinism effects 10% of the british public.
Question: Two individuals without albinism marry and have a child with albinism. How many alleles for albinism does the? two individuals without albinism marry and have a child with albinism. How many alleles for albinism does the mother have? How many alleles for albinism does the father have ?
Answer: well im not exactly sure, sorry. ):
but i have albinism and my mom
and dad got married (well obviously, haha)
and had me.. they say they both had
to carry the same gene. well they were both
carriers for that gene. which is pretty rare.
they didnt know it. but ill try to figure it
out because i want to know to (haha.)
but dont worry im not some freak, haha
mine is not like SUPER crazy. I basically
have white skin, blue eyes, (not red jeez that
would be wierd.) I have whiteish blonde hair
which is getting more yellow. no pigment in
my skin, so i basically cant tan, i just burn.
instantly. if i find out ll help ya (:
Question: How can I help save the people with Albinism in Tanzania? I watched a special on ABC last night. In Tanzania, people with albinism are hunted like wild animals. I figured that if possible, this would be my motif to change the world! Considering I am only 14, but have a parent who is probably willing to travel with me, do you think this is possible? Thanks!
Answer: Its good of you to think of others. but i don think that its possible for you to help...the government is doing its best to get rid of this problem .
Question: Where can i find information on current research on albinism? Im doing an science project on albinism and I need to find out if there is current research going on cconcerning albanism but i cannot find it. On top of that i need names of people who are involved in the reseacrh. Where can i find this? It can be research from organizations, universities,etc.
Answer: http://albinism.org/
Question: What ethnic background or specific population/group does Albinism affect? I'm doing a project on albinism and I can't find any information about what specific ethnic groups albinism affects. Any help would be great!
Answer: It effects Japanese, African and Panamanian people the most in significant rates. Third world countries for the most part have higher rates.
Question: Are purple eyes always due to a form of albinism? My friend has strikingly purple eyes, but although she wears glasses for reading, her eyesight isn't worse than the average person's. I read recently that shades of purple/violet are caused by albinism. Is that *always* the case, or just one possible cause?
Just curious.
Answer: That would may be ocular albinism, where pigments are not produced in the eye, but are in the rest of the body.
Generally albinos have pink eyes, but purple is not uncommon. It may be due to a less common condition, but I have not heard of it.
Question: Why is Albinism more prevalent in Africa than in other parts of the world? Are there genetic or evolutionary reasons why Albinism is much more common in Africa than in any other part of the world?
Answer: Any time a gene pool is isolated (in this case geographically) you are likely to find more of certain traits or less of other traits than the populations of other areas.
It's kind of like asking, "Why are there more kangaroos in Australia?" Because that is where they were when they were isolated.
Question: what is the difference between the diseases albinism and leukoderma ? leukoderma meand defeciency of melanin during its production and due to its deficiency our body eyes or hair became pale white and our eyes become pink . its hereditary . as far as albinism is cocerned italso deals with the same factors . i am a 10th grade student . please help me out
Answer: Albinos are born that way.They don't have any pigment at all right from birth.It is a genetic condition.And the depigmentation is complete.Their whole body is devoid of any pigmentation...even their hair is discolored.
But in case of leucoderma,the onset is usually after the teenage.The loss of pigmentation is patchy.And it is mostly due to an autoimmune disorder.
Question: Is it possible for humans with ocular albinism to have red or dark pink eyes? I know it's possible in animals, but is it in humans?
Someone told me that humans can only have light blue, green, or brown eyes with ocular albinism.
I'm doing some research for a story, help please?
Yeah, yeah. Wrong section. But I wasn't getting any answers, and I'd like some.
Answer: It's extremely rare, but not completely unheard of... One of my best friends has a son with Ocular Albinism. While researching the condition, she said she read of pink eyes in humans but not red. Also the people with Ocular Albinism that have pink eyes, are also most likely to suffer from total Albinism as well.
Question: I have albinism and I'm interested in becoming an actress/model. What are some tips for me? Im sick and tired of the "industry" portraying albinism as if its the worst thing to have or if its some freakish condition. I want to become a legit model or actress to dispell these disgusting stereotypes, but all I need is the right opportunity. What are some suggestings that anyone may have for me?
Answer: The previous poster has the right it with ANTM - your albinism will give you the back story needed to get on the show.
But I hate to say it - you will be a freak in the modeling world. BUT you can cash in on it if you play your cards right. Remember that modelling is a freaky profession. I would look to model Stacey MacKenzie (a very fair skinned freckle faced Black woman) for guidance. I have met her on occasion - she's a great gal and knows her stuff.
Question: What does it mean when you say that "albinism does not occur naturally?" ? Does it mean that albinism will not occur in the wild? Then why there are people who are albino without being hybridized?
Answer: As your other answers have already said, albinism does indeed occur naturally. However, it is rare in wild populations for two reasons. First, it is passed on by recessive genes, meaning that it is unlikely to occur in the first place - two animals which both carry the gene must mate, and both must pass on the gene to the offspring in order for that offspring to be albino. If one parent passes on the gene and the other passes on a normal gene, the offspring will be normally coloured, since the gene for normal colouration is dominant over the albino gene. Secondly, once an albino animal has occurred, its chances of survival are generally slim. Its colour will make it stand out to predators, so it is likely to be killed whilst young and vulnerable. Even if it makes it to adulthood, it's going to have a hard time - if it's a hunter, its prey will be able to see it coming more easily, and if it's the hunted, it's going to be an obvious target.
Albinism is quite common in domestic animals, because we often breed for it on purpose, and captive animals obviously do not have to contend with the disadvantages the condition leaves wild animals with.
Question: What are mythical causes of albinism? I was just curious about what myths surrounded albinism, specifically how it is caused. I'm talking fiction here - I know how it works scientifically, but did people blame the condition on demons or gods or good luck or bad luck, that sort of medieval thing.
Answer: Albinos ARE NOT mythical. They are real normal people with a very minor genetic problem. Nothing more nothing less.
Question: Why does albinism mostly occur in Africans? I know that it can occur in every other race but why does it occur in Africans the most? I seen so many Nigerians with Albinism too.
Answer: Maybe it's a genetic mutation that is just more prevelant among people of African descent, kind of like how Black people are more likely to have sickle cell anemia.
Question: Assume that galactosemia, albinism, and total color blindness are all due to recessive? Assume that galactosemia, albinism, and total color blindness are all due to recessive
alleles. A man showing no symptoms of galactosemia or albinism and with normal
color vision marries a woman with the same characteristics. They produce a child
with galactosemia, albinism, and total color blindness. What are the parental genotypes?
Answer: Both parents must be heterozygous, meaning they have one dominant and one recessive allele -- Gg, Aa, Cc. For the child to display these traits, s/he must be homozygous recessive; the child got all the recessive alleles from both parents -- it is gg, aa, cc.
Question: What is the difference between fish albinism and fish leucomorphism? Mt teacher told me that they are the same but i have read an article that these things were different..Please help me find the answer. Thanks!
Answer: Albinism is a total lack of pigment, meaning the animal will be pure white with pink eyes. Leucism, or leucomorphism, results in reduced pigmentation - this is the condition which causes the white tigers often seen in zoos. The part of their coats that would normally be orange is white, and their eyes are blue.
Both can occur naturally in the wild, but are rare for two reasons. First, both are passed on by recessive genes, meaning that they are unlikely to occur in the first place - two animals which both carry the gene must mate, and both must pass on the gene to the offspring in order for that offspring to be albino or leucistic. If one parent passes on the gene and the other passes on a normal gene, the offspring will be normally coloured, since the gene for normal colouration is dominant over the albino or leucistic gene. Secondly, once an albino or leucistic animal has occurred, its chances of survival are generally slim. Its colour will make it stand out to predators, so it is likely to be killed whilst young and vulnerable. Even if it makes it to adulthood, it's going to have a hard time - if it's a hunter, its prey will be able to see it coming more easily, and if it's the hunted, it's going to be an obvious target.
Albinism and leucism are quite common in domestic animals, because we often breed for it on purpose, and captive animals obviously do not have to contend with the disadvantages the condition leaves wild animals with. Indeed, white tigers are so popular that they have been intensively bred - a lot of unscrupulous inbreeding has taken place, leaving many animals with detrimental conditions.
Question: What are the chances of Albinism in mice? I have a female mouse with albinism.
I have a male without albinism, but who I know carries a gene for it - some of his siblings from the same litter were albino.
Does anyone know, roughly, what the chances are of their babies having albinism?
(I know it is difficult to determine without knowing their full history, I'm just looking for educated guesses!)
Thanks fallchild923!
You know, I was aware that she was PEW, but I actually thought that it and albinism were one and the same.
So thanks, you learn something new every day! ;p
Answer: Yes, it's very likely. And also, it's called "pink eyed white," true albinism in mice is very very rare. So you might get some pink-eyed babies with the father's markings, or white ones with black eyes, or a whole jumble of things.
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