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What chromosomes can be affected by changes in chromosome numbers?
Wiki User
∙ 12y ago
Any chromosome can be affected by aneuploidy. However, generally, the larger the chromosome, the larger the likelihood that the change in chromosome number will be fatal.
Wiki User
∙ 12y ago
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How is a karyotype created?
Karyotype: This is a method to detect defects in the chromosome. You make an image of the chromosomes and then order them according to number ( in human 23 pairs) and you match the 2 chromosomes of a pair. Now gross changes such as extra numbers of a pair or missing numbers. Using a method called FISH you can also give each individual chromosome a color. In this way you can detect translocations, meaning that a part of the chromosome has attached itself to another chromosome. Small changes such as deletions of a nucleotide are not detectable, for that you need to do a DNA analysis. It is used in medecine to detect the cause of certain syndromes and diseases mostly inborn, or to detect the changes in cancer cells that underlie the disease
Compare the numbers of chromosomes in different species?
The chromosome number is specific for each type of organism. The exact chromosome number must be maintained for the species to continue. This means that as cells reproduce, the new cells must have the same number of chromosomes as did the original cells
How do scientists use chromosome comparisons to determine the evolutionary relationships among organisms?
Organisms that are closely related usually have very similar chromosomes numbers and a large degree of homology (similarity) beween their chromosomes (but the chromosomes are different enough to maintain genetic isolation).
How many chromosomes does an animal sperm have?
n/2 where n is the total number of chromosomes normally present in that animal.For example humans have 46 chromosomes in a somatic cell, and 23 chromosomes in a germ cell (sperm / egg).Different species often have different numbers of chromosomes. In fact different numbers of chromosomes are why a donkey and a horse can mate to produce a mule, but the mule cannot reproduce.
How many genes does the chromosome carry?
The number of genes varies. Most of any chromosome consists of non-coding DNA, which does not contain any genes. Each chromosome has many chromatins. One gene consists of many chromatins. Therefore, one chromosome could have many genes.
When the cell splits how does the DNA not get damaged?
DNA is part of chromosome, and will not be affected. The cell splits in chromosomes. There may be some DNAs damaged, but this is in very very small numbers.
How is a karyotype created?
Karyotype: This is a method to detect defects in the chromosome. You make an image of the chromosomes and then order them according to number ( in human 23 pairs) and you match the 2 chromosomes of a pair. Now gross changes such as extra numbers of a pair or missing numbers. Using a method called FISH you can also give each individual chromosome a color. In this way you can detect translocations, meaning that a part of the chromosome has attached itself to another chromosome. Small changes such as deletions of a nucleotide are not detectable, for that you need to do a DNA analysis. It is used in medecine to detect the cause of certain syndromes and diseases mostly inborn, or to detect the changes in cancer cells that underlie the disease
What occurs during nondisjunction?
If nondisjunction occurs, abnormal numbers of chromosomes may find their way into gametes, and a disorder of chromosome numbers may result.
How does the number of chromosome in a persons gametes compare with the numbers of chromosomes in the body cells?
There are half as many chromosomes in gametes than in normal body cells.
Which chromosomes carries the fewest numbers of genes?
The y chromosome, which only contains a few hundred genes.
Compare the numbers of chromosomes in different species?
The chromosome number is specific for each type of organism. The exact chromosome number must be maintained for the species to continue. This means that as cells reproduce, the new cells must have the same number of chromosomes as did the original cells
What chromosome number is affected by alzheimer's disease?
Chromosome numbers: 1, 14, 19, and 21 are affected by Alzheimer's disease.
What is chromosome number of bamboo?
The number of chromosomes in bamboo vary with each type and hybrid. The numbers vary between 48 and 96 chromosomes; 24-48 chromosomal pairs.
How do chromosomes determine an individual's sex?
The female- or male- ness of the fertilized Ovum [Zygote] depends upon the X, or Y, 'component' of Chromosome Number 23 [the sex-chromosome] that is donated from the Male. All of the Female Chromosome Numbers 23 ARE XX.
Do chromosomes contain all of your dna?
Each chromosome contains a section of your DNA. a human has 23 pairs of chromosomes, and each part contains instructions for different things. The 23rd chromosome is where the sex is decided in humans, as the pair is either XY for a male or XX for a female. Different animals have different chromosome numbers, which is why they cannot breed with different species.
What chromosome does Neurofibromatosis effects?
WOW!! That guy is amazing. A chicken? Histerical, Neurofibromatosis affects only chromosome number 23. It also will affect the brain and is an autosomal dominant genetic disorder.It is when your chromosome has a chicken.
Is it true that a person who inherits two X chromosomes will be a male?
Answer:This is not true. If you inherit two X chromosomes you will be a girl. A boy has a X and a Y chromosome. I don't know for sure, but I think so. After all, the numbers xs are greater than ysAnswer:No, it isn't. A person with XY chromosomes is male. Two X chromosomes is female.Answer:It is possible but they have to inherit a Y chromosomes. It called Klinefelter's syndrome (KS). KS has two X chromosomes and one Y chromosome. They can grow breast and have an ovary and have anger problems. Most men like this in up in prison.
