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People with down syndrome have how many chromosomes?
47There are 47 chromosomes in someone with Down syndrome; the 21st pair has an extra chromosome. Most people have 46 chromosomes. Down syndrome is also known as "Trisomy 21" - a reference to the fact that someone with Down syndrome has 3 pairs of chromosomes on their 21st pair.
Complete extra sets of chromosomes?
twins
Where does the cell pior to undergoing mitosis obtain the extra or additional set of chromosomes?
The extra set of chromosomes is obtained by replicating the original pair. The two chromosomes end up in different cells at the end of mitosis.
What is the diagnostic tool that reveals missing or extra chromosomes and some structural changes in an individual's chromosomes?
A karyotype analysis is the diagnostic tool that reveals missing or extra chromosomes, as well as some structural changes in an individual's chromosomes. This test involves arranging and visualizing the chromosomes from a cell sample to identify abnormalities.
What mutation causes either the inclusion of an extra chromosomes in offspring or the deletion of an entire chromosomes?
non-disjunction
What is the prescence of complete extra sets of chromosomes called?
polyploidy
When a child is born with extra or missing chromosomes?
Mental Retardation.
How do chromosomes gain a extra copy of a gene during meiosis?
Chromosomes can gain an extra copy of a gene during meiosis through a genetic event called non-disjunction, where homologous chromosomes fail to separate properly during cell division. This can lead to an uneven distribution of chromosomes in the resulting gametes, resulting in an extra copy of a gene in one of the daughter cells.
What has 48 chromosomes?
yes they can, males and females can inherit up to 3 extra sex chromosomes possibly bringing their total count up to even 49 chromosomes.
What chromosomes do you get an extra copy for in humans that results in Down syndrome?
Down Syndrome is caused by a triplication of the 21st chromosome.
Is breast cancer do to a lack of chromosomes or extra chromosomes?
Neither. Breast cancer is the over growth of cells due to hormones or genetics.
Could a human end up with special ability if they had more chromosomes than normal?
Contrary to comic book mythology, if you mess with the number of chromosomes, the result is either a nonviable zygote, severe genetic abnormalities, or later in life, cancer. Humans can survive with extra or missing sex chromosomes, but usually an odd number of autosomes results in spontaneous abortion of the embryo. In short, you will not be able to read minds with a few extra chromosomes.
