| A | B |
|---|
| What is the shape of DNA? | double helix |
| What makes up the sides of a DNA molecule? | sugar and phosphate |
| Where can DNA be found? | chloroplasts, nucleus and mitochondria |
| What are the 4 nitrogen bases found in DNA? | Adenine, Thymine, Guanine, and cytosine |
| What base pair matches up with Adenine? | Thymine |
| What base pair matches up with Cytosine? | Guanine |
| When an organism has two genes that are the same for a trait it is... | purebreds |
| When an organism has genes that are different for a trait they are called... | hybreds |
| The alternative forms of a gene | alleles |
| What is the phenotype of a person who is heterozygous for the tongue rolling trait? | Rr |
| When both genes for a trait are dominant | homozygous dominant |
| When both genes for a trait are recessive | homozygous recessive |
| when an organism has one dominant trait and one recessive trait | heterozygous |
| The weaker of two traits usually seen less often in a population | recessive |
| The stronger of two traits usually seen more often in a population | dominant |
| A trait that is learned or developed during an organisms lifetime. | Acquired trait |
| A trait that is passed down from parent to offspring | inherited trait |
| a unique characteristic that is passed down from parent to offspring | trait |
| the science that studies the process of heredity | genetics |
| The physical characteristics of a trait | phenotype |
| The gene make-up of a trait, represented with letters. The part you can NOT see | genotpe |
| The passing on of traits from parent to offspring | heredity |
| The chemical building block of life | DNA |
| Everyone has ___ genes that control each trait | 2 |
| Why is DNA called the blueprint of life? | ...think... |
| If all cells have exactly the same DNA, how do some cells become brain cells and others become skin cells? | ...think... |
