This is for Biology students to give their opinion on current events in the field of Biology.
Wednesday, January 9, 2008
Nondisjunction
Nondisjunction is when homologous chromosomes fail to separate properly during meiosis. What are some of the side affects of this occurring. Is there a way to detect this problem?
IF the zygote will have an extra chromosome it is called trisomy. That is when the resulting zygote has 47 chromosomes instead of the normal 46. Whena gamete with an extra set of chromosmes is fertilized by a normal haploid gamete the ofspring has three sets of chromosomes and is triploid. Organisms with more than the usual number of chromosome sets are called polyploids. This usually has death in animals but plants can survive.
In nondisjunction you can get a condition called trisomy. This gives a human an extra chromosome and the resulting baby will have down syndrome. When the organism that is lacking a chromosome don't often survive. Some examples can be Tuner syndrome, which is when a female has only one X instead of two. Another form can result in an offspring that has three sets of chromosomes and is a triploid.
In this problem the side affects could be anywhere from death to animals, but most plants are able to survive. Also when this happens, two kinds of gametes result, one has an extra chromosome, and the other is missing a chromosome. Normally the zygote will have an extra chromosome and this condition is call trisomy. When a gameteis fertilized by a normal haploid gamet, the offspring ends up with 3 sets of chromosomes and is called a triploid.
If nondisjunction happens, then both chomosomes of homologous pair move to the same pole of the cell when it is suppost to be one chromocome from each pair moves to each pole. The affects is a condition called trisomy. The zygote will develop into a baby with Down syndrome. There is also monosomy where the zygote is missing a chromosome.
You can get a condition called trisomy. Then you will get an extra chromosome and a baby could get down syndrome. It can also result in offspring that has three sets of chromosomes and is a triploid.
ther is a condition called trisomy that occurs in this cycle. it makes the baby have an extra chromosome which ultimately results in the baby having downsyndrome. When this occurs in animals the animal usually doesnt survive. However when it occurs in plants they often survive.
The normal human body has 46 chromosomes and when it has an extra chromosome it can be mentally retarded and lack some skill that a normal person might have. If a gemete has a extra set of chromosomes then it can form into a triploid which comes from fertilization. Then some animal may not survive this reaction.
You can get a condition called trisomy. That means you get an extra chromosomes which means you have 47 chromosomes instead of 46. If you have 47 chromosomes instead of the normal 46 you can get a disease called down syndrome. It can also result in the offspring having three sets of chromosomes called a triploid.
If you end up getting a nondisjunction, it is not always a horrible thing you will die from. It can develop into trisomy. In this procedure, another thing happens as well. One has an extra chromosome and the other one is missing a chromosome. You often see these after gametes fuse. If trisomy occurs they zygote will have 47 chromosomes and the baby will develop into having down syndrome. In most cases humans survive, but organisms most times do not.
There are many side effects and Syndromes that can be caused by Nondisjunction. Some of these syndromes can be down syndrome, Turner Syndrome, and Trisomy ( you have an extra chromosome). This is very serious as it can and usually does result in death.
some side affects of chromosomes failing to separate properly during meiosis can cause syndromes. syndromes are basically caused by having one or a few too many chromomes than the normal amount, 46.
When the zygote has an extra chromosome the person has trisomy. When there is an extra chromosome with chromosome 21 then the person has down syndrome. If someone is missing a chromosome then that person has monosomy (Turner Syndrome). When a gamete with an extra set of chromosome is fertilized by a normal haploid gamete, the offspring has three sets of chromosomes and is triploid.
13 comments:
IF the zygote will have an extra chromosome it is called trisomy. That is when the resulting zygote has 47 chromosomes instead of the normal 46. Whena gamete with an extra set of chromosmes is fertilized by a normal haploid gamete the ofspring has three sets of chromosomes and is triploid. Organisms with more than the usual number of chromosome sets are called polyploids. This usually has death in animals but plants can survive.
In nondisjunction you can get a condition called trisomy. This gives a human an extra chromosome and the resulting baby will have down syndrome. When the organism that is lacking a chromosome don't often survive. Some examples can be Tuner syndrome, which is when a female has only one X instead of two. Another form can result in an offspring that has three sets of chromosomes and is a triploid.
it can get trisomy. you can get down syndrome from it. this is from an extra chromosome.
In this problem the side affects could be anywhere from death to animals, but most plants are able to survive. Also when this happens, two kinds of gametes result, one has an extra chromosome, and the other is missing a chromosome. Normally the zygote will have an extra chromosome and this condition is call trisomy. When a gameteis fertilized by a normal haploid gamet, the offspring ends up with 3 sets of chromosomes and is called a triploid.
If nondisjunction happens, then both chomosomes of homologous pair move to the same pole of the cell when it is suppost to be one chromocome from each pair moves to each pole. The affects is a condition called trisomy. The zygote will develop into a baby with Down syndrome. There is also monosomy where the zygote is missing a chromosome.
You can get a condition called trisomy. Then you will get an extra chromosome and a baby could get down syndrome. It can also result in offspring that has three sets of chromosomes and is a triploid.
ther is a condition called trisomy that occurs in this cycle. it makes the baby have an extra chromosome which ultimately results in the baby having downsyndrome. When this occurs in animals the animal usually doesnt survive. However when it occurs in plants they often survive.
The normal human body has 46 chromosomes and when it has an extra chromosome it can be mentally retarded and lack some skill that a normal person might have. If a gemete has a extra set of chromosomes then it can form into a triploid which comes from fertilization. Then some animal may not survive this reaction.
You can get a condition called trisomy. That means you get an extra chromosomes which means you have 47 chromosomes instead of 46. If you have 47 chromosomes instead of the normal 46 you can get a disease called down syndrome. It can also result in the offspring having three sets of chromosomes called a triploid.
If you end up getting a nondisjunction, it is not always a horrible thing you will die from. It can develop into trisomy. In this procedure, another thing happens as well. One has an extra chromosome and the other one is missing a chromosome. You often see these after gametes fuse. If trisomy occurs they zygote will have 47 chromosomes and the baby will develop into having down syndrome. In most cases humans survive, but organisms most times do not.
There are many side effects and Syndromes that can be caused by Nondisjunction. Some of these syndromes can be down syndrome, Turner Syndrome, and Trisomy ( you have an extra chromosome). This is very serious as it can and usually does result in death.
some side affects of chromosomes failing to separate properly during meiosis can cause syndromes. syndromes are basically caused by having one or a few too many chromomes than the normal amount, 46.
When the zygote has an extra chromosome the person has trisomy. When there is an extra chromosome with chromosome 21 then the person has down syndrome. If someone is missing a chromosome then that person has monosomy (Turner Syndrome). When a gamete with an extra set of chromosome is fertilized by a normal haploid gamete, the offspring has three sets of chromosomes and is triploid.
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