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13 Genetics
Question | Answer |
---|---|
Gene | Section of a chromosome that codes for a trait |
Allele | A gene option |
Dominant | Trait shows if present |
Recessive | Must inherit 2 copies to show this trait |
Environment | Can influence the expression of genes |
Gene mutation | Change in the DNA code |
Chromosome mutation | Change in the number or structure of chromosomes |
Somatic Cells | Body cells, Do not pass mutations to offspring |
Gametes | Sex cells, can pass mutations to offspring |
Homozygous | Pure, same genes for a trait |
Heterozygous | Hybrid or carrier; different genes for a trait |
Phenotype | The physical appearance |