WEB RESULTS

https://ghr.nlm.nih.gov/primer/mutationsanddisorders/chromosomalconditions

3 days ago ... Human cells normally contain 23 pairs of chromosomes, for a total of 46 ... of aneuploidy is trisomy, or the presence of an extra chromosome in ...

https://www.ncbi.nlm.nih.gov/books/NBK115545/

Each chromosome contains thousands of genes, which make proteins that ... two X chromosomes, and males usually have one X and one Y chromosome in ... Numerical abnormalities are whole chromosomes either missing from or extra to  ...

https://www.genome.gov/about-genomics/fact-sheets/Chromosome-Abnormalities-Fact-Sheet

Nov 7, 2019 ... Chromosome abnormalities can either be numerical or structural and usually occur when there ... How many chromosomes do humans have?

https://learn.genetics.utah.edu/content/disorders/extraormissing/

https://genetics.thetech.org/ask/ask399

When meiosis messes up, you can end up with too many or too few chromosomes. One extra chromosome in an egg or sperm means three in the fertilized egg ...

https://genetics.thetech.org/original_news/news124

Feb 26, 2010 ... ... or the other problems that usually come with missing or extra chromosomes. ... Case Report: Potential Speciation in Humans Involving ...

https://www.biology.iupui.edu/biocourses/N100/2k2humancsomaldisorders.html

Apr 30, 2003 ... This is a photograph of the 46 human chromosomes in a somatic cell, ... A trisomic cell has one extra chromosome (2n +1) = example: trisomy ...

https://www.betterhealth.vic.gov.au/health/conditionsandtreatments/trisomy-disorders

Aug 30, 2013 ... Humans usually have 23 pairs of chromosomes, with two sex ... The addition of an extra chromosome usually occurs spontaneously during ...

https://en.wikipedia.org/wiki/Trisomy

A trisomy is a type of polysomy in which there are three instances of a particular chromosome, ... Humans have 46 chromosomes (i.e. 23 pairs of chromosomes). ... "Tertiary trisomy" - the extra chromosome is made up of copies of arms from two ...

https://www.urmc.rochester.edu/encyclopedia/content.aspx?contenttypeid=90&contentid=p02421

In females, the 23 rd pair is two X chromosomes. In males, the 23rd pair is one X and one Y chromosome. There are 2 types of Turner syndrome: monosomy X TS  ...