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| 1 | HOUSE RESOLUTION
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| 2 | WHEREAS, A trisomy is a type of polysomy in which there are | ||||||
| 3 | three instances of a particular chromosome, instead of the | ||||||
| 4 | normal two; a trisomy is a type of aneuploidy, an abnormal | ||||||
| 5 | number of chromosomes; and
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| 6 | WHEREAS, Most organisms have pairs of chromosomes in each | ||||||
| 7 | cell, with one chromosome inherited from each parent; in such | ||||||
| 8 | organisms, a process called meiosis creates cells called | ||||||
| 9 | gametes that have only one set of chromosomes; and
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| 10 | WHEREAS, The number of chromosomes is different for | ||||||
| 11 | different species; humans have 46 chromosomes, or 23 pairs of | ||||||
| 12 | chromosomes, and human gametes have only 23 chromosomes; and
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| 13 | WHEREAS, If the chromosome pairs fail to separate properly | ||||||
| 14 | during cell division, the egg or sperm may end up with a second | ||||||
| 15 | copy of one of the chromosomes; if such a gamete results in | ||||||
| 16 | fertilization and an embryo, the resulting embryo may also have | ||||||
| 17 | an entire copy of the extra chromosome; and
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| 18 | WHEREAS, Full trisomy, also called primary trisomy, means | ||||||
| 19 | that an entire extra chromosome has been copied; partial | ||||||
| 20 | trisomy means that there is an extra copy of part of a | ||||||
| 21 | chromosome; secondary trisomy means the extra chromosome has | ||||||
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| 1 | quadruplicated arms; tertiary trisomy means the extra | ||||||
| 2 | chromosome is made up of copies of arms from two other | ||||||
| 3 | chromosomes; and
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| 4 | WHEREAS, Trisomies can occur with any chromosome but often | ||||||
| 5 | result in a miscarriage, rather than a live birth; and
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| 6 | WHEREAS, Trisomy 16 is the most common trisomy in human | ||||||
| 7 | pregnancies, occurring in more than one percent of pregnancies; | ||||||
| 8 | and
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| 9 | WHEREAS, Pregnancies in which some normal cells occur in | ||||||
| 10 | addition to the trisomic cells, or mosaic trisomy 16, survive; | ||||||
| 11 | this condition, however, usually results in a spontaneous | ||||||
| 12 | miscarriage in the first trimester; and
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| 13 | WHEREAS, The most common types of autosomal trisomy that | ||||||
| 14 | survive to birth in humans are Trisomy 21 (Down syndrome), | ||||||
| 15 | Trisomy 18 (Edwards syndrome), Trisomy 13 (Patau syndrome), and | ||||||
| 16 | Trisomy 8 (Warkany syndrome 2); therefore, be it
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| 17 | RESOLVED, BY THE HOUSE OF REPRESENTATIVES OF THE ONE | ||||||
| 18 | HUNDRED FIRST GENERAL ASSEMBLY OF THE STATE OF ILLINOIS, that | ||||||
| 19 | we declare the month of March 2019 as Trisomy Awareness Month | ||||||
| 20 | in the State of Illinois, and we urge all citizens of this | ||||||
| 21 | State to become aware of the different types of Trisomy; and be | ||||||
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| 1 | it further
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| 2 | RESOLVED, That suitable copies of this resolution be | ||||||
| 3 | presented to Governor J.B. Pritzker and all Illinois | ||||||
| 4 | Constitutional officers.
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