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How many chromosomes would each of the gametes have the would cause Downs syndrome in a zygote?
In a condition such as Trisomy 21 (predominant form of Down syndrome) embryo starts developing with three copies of chromosome 21 instead of two. It is due to the failure in the separation of two (2n) chromosome 21 in either egg or sperm cell prior to or during fertilization. So precisely, the answer is, either one of sperm or egg gamete would have 24 chromosome (n) instead of 23
How many chromosomes will a zygote with trisomy have?
Meiotic nondisjunction. In meiosis I or II, chromosome pair 21 fail to separate correctly, leaving one gamete with an extra chromosome 21.
What does chromosome 21 provide?
Usually humans have 46 chromosomes, divided into 23 pairs within each cell, one copied from each parent. Chromosome 21 is the smallest and the second human chromosome to be sequenced. Many genetic conditions are related to changes in particular genes on this chromosome including Cancers, Downs Syndrome and Alzheimer's Disease Changes in the structure in the number of copies of a chromosome may also cause problems with health and development. Cancer For example -translocation in chromosomes 12 and 21 have been linked to Lymphoblastic Leukemia whilst links between translocation of 8 and 21 Acute Myeloid leukemia. Downs Syndrome -a chromosomal condition that, in most cases is caused by trisomy 21 (each cell has 3 copies instead of the normal 2).
If seven individuals of the genus Euglena reproduce at one time how many individuals result?
Euglena reproduce asexually by splitting itself into two. Start with 7, each turns into 2, you would have 14.
How many identical are born in the us?
Since 1989 there have been an average of 56,136 sets of twins born each year in the US.
Is triosmy lethal or non lethal?
There are many Trisomy 18 and Trisomy 13 Living Survivors. Carrying to term, each child charts their own course, when treated to their unique medical issues.For more information you can go to SOFT Support Organization for Trisomy 18, 13 and Related Disorders. There is also the TRIsoMY Favorite Things blog in the related links below. Therese Ann, Mom to Natalia, living with full trisomy 13. Celebrating 13th Birthday in 2013.
How many kids does unicef help each year?
Unicef has helped many individuals.
How many twins are born in Maryland each year?
how many twins are born inMaryland each year
How many babies are born in poverty every minute on earth?
Approximately 210 babies are born into poverty every minute on earth. This translates to around 300,000 babies born into poverty each day. It is a significant global issue that requires attention and action from governments, organizations, and individuals.
Are there treatments foe those who have patau syndrome?
there is no cure for patau syndrome which is the result of a chromosomal disorder. To find out more about this go to the related link (treatment and medical care Patau syndrome) belowWhile there is no cure for Trisomy 13 (Patau Syndrome) In some cases medical intervention can be done to make the life of the child more comfortable. This is not a fatal diagnosis for all children, there are many long term survivors Living with Trisomy 13. There are many support resources now available for these families and the professionals who work with these children.Medical management of children with Trisomy 13 is planned on a case-by-case basis and depends on the individual circumstances of the patient. Treatment of Patau syndrome focuses on the particular physical problems with which each child is born. Many infants have difficulty surviving the first few days or weeks due to severe neurological problems or complex heart defects. Surgery may be necessary to repair heart defects or cleft lip and cleft palate. Physical, occupational, and speech therapy will help individuals with Patau syndrome reach their full developmental potential.Living with Trisomy 13 (Patau Syndrome)http://www.livingwithtrisomy13.orgGenetic and Rare Diseases Information Center (GARD)http://rarediseases.info.nih.gov/GARD/Condition/7341/QnA/24813/Trisomy_13.aspx#top
How many people are born in the us each second?
There are about 4.3 babies born each second in the US.
How many people are born in each seconds?
About 4 are born and 2 to 3 die each second.
How many premature babies are born each year?
937 Premature babies are born each year
What are the stages of Down syndrome?
There are three different kinds of Down syndrome: Translocation, Trisomy 21, and Mosaic.Translation: occurs when a piece of chromosome breaks off and attaches to another.Trisomy 21 (the most common kind): caused by meiotic disjunction, or in other words a gamete produces an extra of Chromosome 21.Mosaic is similar to Trisomy 21 in that it still has the extra chromosome in the cell, but also some of the other cells in the body have a normal amount of chromosomes.
Girls born in Illinois each day?
How many girls born in Illinois each day? 213 million
How many baby boomers die each day?
Approximately 10,000 baby boomers die each day in the United States. The baby boomer generation consists of individuals born between 1946 and 1964, and this generation is currently reaching older ages where mortality rates are higher.
How many dogs are born each day in the US?
Over 800000 puppies are born in the US each day.The answer is 2.
