* Your assessment is very important for improving the workof artificial intelligence, which forms the content of this project
Download Karyotype
Genealogical DNA test wikipedia , lookup
Extrachromosomal DNA wikipedia , lookup
Genetic testing wikipedia , lookup
Comparative genomic hybridization wikipedia , lookup
Skewed X-inactivation wikipedia , lookup
Segmental Duplication on the Human Y Chromosome wikipedia , lookup
Medical genetics wikipedia , lookup
Human genome wikipedia , lookup
Genome evolution wikipedia , lookup
Genomic imprinting wikipedia , lookup
Genomic library wikipedia , lookup
Genome (book) wikipedia , lookup
Artificial gene synthesis wikipedia , lookup
Gene expression programming wikipedia , lookup
Microevolution wikipedia , lookup
Designer baby wikipedia , lookup
Hybrid (biology) wikipedia , lookup
X-inactivation wikipedia , lookup
Y chromosome wikipedia , lookup
EQ: How can I use a karyotype to determine if a person has a genetic disorder? To study the chromosomes in a nucleus, scientists organize the chromosomes into a karyotype. Karyotype: a picture of the chromosomes in a cell. The chromosome pairs are arranged in descending order of size. (start big, get small) 20 pairs 19 pairs So, how many chromosomes do we have? 23 pairs or 46 total This is considered to be a diploid cell because it has all 23 pairs of chromosomes—a complete set for a human. 23 pairs In a karyotype, the 1st 22 pairs of chromosomes are called AUTOSOMES. The 23rd pair are called SEX CHROMOSOMES. So, if this happy couple was to have a baby – how many chromosomes will the baby have? If the husband gives the baby 46 chromosomes and she gives 46 chromosomes, that’s 92 chromosomes in our baby!?! That’s not human!! He can ONLY give HALF of his chromosomes, and she can only give HALF. Then the baby will have a total of 46. ~ 23 from Mom, 23 from Dad ~ What’s wrong with this Karyotype? Is this Karyotype a Male or Female Down’s Syndrome • Trisomy 21 – 3 chromosomes at location #21 • A result of nondisjunction • Decreased mental capability • Flat face/features • Wider necks • Shorter stature