| A | B |
|---|
| Every human being has | 23 pairs of chromosomes |
| A tool used to see possible combinations of genes is called a | Punett Square |
| the characteristics passed from parent to offspring is called | traits |
| The father of gentics | Gregor Mendel |
| The mathematical chance that an event will occur is called | probably |
| Decides the gender(sex) of the child | male |
| An organisms phenotype describes a childs | physical appearance like hair color, eyecolor and height |
| an abnormal condition taht a person inherits through genes or chromosomes | genetic disorder |
| a gentic disorder in which a person's blood clots very slow | hemophilia |
| people with an extra copy of chromosome 21 have a disorder called | Downs Syndrome |
| the study of genetics | heredity |
| a short sction of a chromosome taht contains information about a trait | gene |
| a gene whose trait always shows up in an organism | Dominant Gene |
| The genetic makeup of an organism(DD,Dd,dd) | Genotype |
| an organism that has two identical genes (TT, tt) | Purebred |
| An organism with two different genes(Tt) | hybrid |
| process by which the number of chromosomes is reduced by 1/2 to form sex cells. Chromosome pairs separate | Meiosis |
| neither trait is dominant so they blend together | Incomplete dominance |
| determines the sex of an organism(XX=female, XY=male) | Sex chromosomes |
| the sides of the DNA ladder is made up of | sugar and phosphate units taht are anti-parallel to each other |
| The steps of the DNA ladder is made up of | nitrogen bases which are held together by hydrogen bonds |
| a genetic disorder in which your body makes too much mucus | Cystic Fibrosis |
| a procedure in which the amniotic fluid is removed form around a developing baby to test for genetic disorders | Amniocenteses |
| To change the arrangement of DNA for benficial reasons | genetic engineering |
| inserting working copies of a genes directly into the cells of a person with a genetic disorder | gene therapy |
| a technique used to produce genetically identical organisms | cloning |
| cells that have the ability to develop into different types of cells by reomving the DNA and inserting the desired instructions | stem cells |
| Insertion | an extra nitrogen base is inserted during replication |
| Deletion | a nitrogen bases is eliminated |
| Substitution | a nitrogen base is changed |
