| A | B |
|---|
| 46 | This is the number of chromosomes found in human body cells |
| 23 | This is the number of chromosomes found in human sperm and egg cells |
| karyotype | This is a picture of chromosomes cut out from photographs and grouped together in pairs. |
| sex chromosomes | Two of the 46 human chromosomes are known as ___________. |
| autosomes | 44 of the human chromosomes are known as _________. |
| pedigree chart | This is used to show inheritance of traits from one generation to the next. It is an important tool used to determine risk of inheriting certain genetic disorders. |
| cystic fibrosis | This is the most common fatal genetic disease |
| sickle cell anemia | This is a common genetic disorder found among African Americans. Characterized by bent and twisted shape of red blood cells |
| hemophilia | This genetic disorder is caused by the lack of a protein needed for normal blood-clotting |
| nondisjunction | This occurs when chromosomes fail to separate causing abnormal number of chromosomes |
| Down Syndrome | also known as trisomy-21. |
| Human Genome Project | Project to sequence bases of all human chromosomes |
| gene therapy | Curing genetic disorders by replacing an absent or faulty gene with normal gene |
| Amniocentesis | Genetic test in which embryonic fluid is extracted with a long needle so that a karyotype can be made |
| DNA Fingerprinting | This is a technique used to identify an individual by looking at sections of DNA that vary widely form one individual to another |
