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Biology Vocab 7
| Term | Definition |
|---|---|
| stem cell | a cell that other cells develop from- some are the same types of cells and some can become other specialized types of cells |
| mutation | when the DNA sequence of a living organism is changed for good |
| mitosis | one parent cell splits into 2 DAUGHTER cells that both have the same number of chromosomes |
| meiosis | a call division that cuts the number of chromosomes by 1/2. It makes 4 haploid cells from one diploid parent cell |
| diploid | when you have 2 complete sets of chromosomes, one set from each parent (mother and father) |
| haploid | a single set of chromosomes in an organisms cells |
| homozygous | having 2 identical versions of a gene from each parent like 2 alleles (1 from each parent) for blue eyes |
| heterozygous | having 2 different alleles for a trait (like one allele for brown eyes and one allele for blue eyes) |
| probability | the likelihood or chances of an event occurring. Written between 0 and 1 |