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Cells Chapter 3 ツ
This is cells chapter 3. ( ͡° ͜ʖ ͡°)
| Term | Definition |
|---|---|
| Heredity | The passing of traits from parents to offspring. |
| Trait | A specific characteristic that an organism can pass to its offspring through its genes. |
| Genetics | The scientific study of heredity. |
| Fertilization | The process in sexual reproduction in which an egg cell and a sperm cell join to form a new cell. |
| Purebred | An offspring of many generations that has the same form of a trait. |
| Gene | A sequence of DNA that determines a trait and is passed from parent to offspring. |
| Alleles | The different forms of a gene. |
| Dominant Allele | An allele whose trait always shows up in the organism when the allele is present. |
| Recessive Allele | An allele that is hidden whenever the dominant allele is present. |
| Hybrid | An offspring of crosses that has two different alleles for a trait. |
| Probability | A number that describes how likely it is that a particular event will occur. |
| Punnett Square | A chart that shows all the possible combinations of alleles that can result from a genetic cross. |
| Phenotype | An organism's physical appearance, or visible traits. |
| Genotype | An organism's genetic makeup, or allele combinations. |
| Homozygous | Having two identical alleles for a particular gene. |
| Heterozygous | Having two different alleles for a particular gene. |
| Incomplete Dominance | A situation in which one allele is not completely dominant over another allele. |
| Codominance | A situation in which both alleles for a gene are expressed equally. |
| Multiple Alleles | Three or more possible alleles of a gene that determine a trait. |
| Polygenic Inheritance | The inheritance of traits that are controlled by two or more genes, such as height in humans |
| Meiosis | The process that occurs in the formation of sex cells (sperm and egg) by which the number of chromosomes is reduced by half. |