Question 1

what is trisomy?

Accepted Answer

Extra chromosome: Trisomy is a genetic conditon in which the person has an extra chromosome. Trisomy 21or having an extra chromosome #21 is what causes downs syndrome.

Question 2

now is a partial trisomy formed?

Accepted Answer

Partial trisomy: "partial" trisomy refers to only having an extra copy of part of the chromosome, not the entire chromosome as is the case in full trisomies.  The extra piece is usually inserted into or attached to another chromosome. Hope that helps.

Question 3

what is the definition or description of: trisomy?

Accepted Answer

Chromosomal  tripled: Ordinary chromosomal traits require a pair of chromosomes to determine the traits.  Occasionally, as a mistake in cellular division, there is a tripling of one of the chromosomes.  When these occur, they usually cause unpleasant, and sometimes deadly conditions in the inheritor of these traits (e.g. Down's).  Many we do not know about as they are lethal prior to birth.

Question 4

what complications could a baby with trisomy 16 experience?

Accepted Answer

This is complicated.: It's complicated because full trisomy 16 is 99.9% fatal before birth. Newborns with partial trisomy 16 may live - most have multiple birth defects and serious developmental problems. The exact types of birth defects are different depending on what parts of chromosome 16 are duplicated. Your clinical geneticist or genetic counselor can help. You can find a GC here: http://nsgc.org/p/cm/ld/fid=164.

Question 5

what other trisomy's are there besides 21 and what do they cause?

Accepted Answer

Many: Only about 1 in four conceptions go to term. The others are mostly all affected by either trisomies or monosomies, and are incompatible with survival. Most die before implantation, and a mom won&#x27;t even know that conception had occurred.  Many may implant, but die either before an embryo is visible (a blighted ovum) or later.  Trisomies 13, 18, and 21 may survive until birth.

Question 6

can you please explain what trisomy 16 is and list the symptoms for me? thank you.

Accepted Answer

Miscarriage: Human being have 23 pairs of chromosomes, receiving one copy of each pair from each parent. Trisomy means that there are three copies of a particular chromosome rather than the normal 2 copies. The problems caused by trisomy depends upon which chromosome is affected. If complete (affecting all cells), Trisomy 16 is incompatable with life. Trisomy 16 is a the most common cause of early miscarriage.

Question 7

what is trisomy 22?

Accepted Answer

Trisomy 22: Trisomy is a big word that really only means three copies. Trisomy 22 means three copies of chromosome 22. Trisomy 22 causes many spontaneous pregnancy losses. If a fetus has trisomy 22 it rarely survives into the second or third trimester. If born alive, the newborn usually dies.

Question 8

what are the effects of trisomy 17 ?

Accepted Answer

See below: It's a rare genetic disorder where duplication of genetic material from chromosome 17 causes various abnormalities. The type and severity of symptoms varies depending on the size and location of the genetic material that is duplicated. Possible symptoms:
•impaired intelligence 
•developmental delay 
•reduced muscle tone 
•various facial anomalies 
•short stature.

Question 9

what is another name for trisomy 21?

Accepted Answer

Down Syndrome: This syndrome was named for j langdon down, a physician who ran a foundling hospital in britain many years ago. He wrote up one of the first recognized descriptions of the common features of the syndrome published in a medical journal.

Question 10

what population is affected by trisomy 13?

Accepted Answer

?? odd question ??: Humans of any race, culture,ethnic group, social status, etc. can have a baby with trisomy 13.

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