| A | B |
|---|
| autosomes | the first 22 chromosomes |
| karyotype | a picture of sets of chromosomes shape, size and numbe |
| pedigree | a chart showing genetic relationships within a family |
| polygenic | a trait that is controlled by many genes |
| Down's syndrome | triploidy of 21st chromosome(an extra chromosome) |
| sickle cell disease | a disorder where blood cells become deformed and cause clotting |
| DNA fingerprinting | process used to compare DNA fragments from different individuals |
| 23 pairs | the number of pairs of chromosomes in a human |
