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Heredity
Ch. 3
| Question | Answer |
|---|---|
| Alleles | the different forms of a trait that a gene may have. |
| Dominant | factor that always shows up & covers up another trait |
| Genetics | the study of how traits are inherited |
| Genotype | the genetic makeup or alleles of an organism |
| Heredity | passing of traits from parent to offspring |
| Heterozygous | an organism that has 2 different alleles for a trait (hybrid) |
| Homozygous | an organism with 2 of the SAME alleles for a trait |
| Hybrid | an organism that has 2 different alleles for a trait |
| Purebred | an organism that has the same from a trait from each parent |
| Phenotype | the physical appearance or visible traits |
| Punnett Square | a tool used to predict the number of times certain traits will occur |
| Recessive | factor that is hidden if a dominant trait is present |
| fertilization | joining of sperm & egg |
| Trait | specific characteristics |
| F1 | first generation |
| Genes | factors that control a trait |
| Probability | a number that describes how likely something will occur |
| Punnett Square | a chart that shows all the possible ways alleles can cross in offspring |
| Incomplete dominance | when one allele only partially covers up another allele |
| Codominance | when both alleles are equally dominant |
| Multiple Alleles | genes that have 3 or more alleles for a trait |