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Genetics Review
for the Lynx Team at WMS
| Question | Answer |
|---|---|
| homozygous | Having two identical alleles for a trait |
| heterozygous | Having two different alleles for a trait |
| TT | An example of a homozygous, dominant genotype |
| Tt | An example of a heterozygous genotype |
| tt | An example of a homozygous recessive genotype |
| dominant allele | an allele whose trait always shows up in an organism |
| recessive allele | an allele that is masked (hidden) when the dominant allele is present |
| phenotype | an organism's physical appearance |
| genotype | an organism's genetic makeup |
| Punnett Square | chart that shows the possible combinations that could result from a genetic cross |
| Gregor Mendel | the Father of Genetics |
| chromatin | material in cells that contains DNA and carries genetic information |
| chromosome | during cell division, chromatin condenses into these structures |
| gene | a segment of DNA on a chromosome that codes for a specific trait. Each human chromosome has hundreds of genes. |
| allele | the different forms of a gene |
| trait | a characteristic that a parent can pass on to its offspring |
| genetics | the scientific study of heredity |
| nucleus | the part of the cell that contains the chromatin |
| tall or short | examples of a phenotype |
| TT, Tt, tt | examples of a genotype |
| heredity | the passing of traits from parent to offspring |
Created by:
mrsscienceteacher