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crosby87
Probability and Genetics
| Question | Answer |
|---|---|
| Probability: | the likelihood that a particular event will occur |
| Punnett Square: | A chart that shows all the possible combinations of alleles |
| What represents alleles? | letters |
| A dominant allele = | capital letter |
| A recessive allele = | lower-case letter |
| Phenotype: | an organism's physical appearance (visible traits) |
| Genotype: | an organism's genetic makeup (allele combinations) |
| Homozygous: | an organism that has two identical alleles for a trait (purebred) |
| Heterozygous: | an organism that has two different alleles for a trait (hybrid) |
| Codominance: | a condition in which neither of the two alleles of a gene is dominant nor recessive |
| Define Heredity: | the passing of traits from parents to offspring (traits=characteristics |
| Define genetics: | the scientific study of heredity |
| Who was Gregor Mendel | the father of genetics |
| Define Chromosomes: | a double rod of condensed chromatin; contains DNA that carries genetic information |
| Define Purebred: | organisms that always produce offspring with the same form of a trait as the parent |
| Define Genes: | segment of DNA on a chromosome that codes for a specific trait |
| Define Alleles: | diferent forms of genes |
| Define Dominant allele: | an allele whose trait always shows up in an organism when the allele is present |
| Define Recessive allele: | an allele that is masked (not seen or observed; hidden) |
| Define Hybrid: | an organism that had two different alleles for a trait |
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crosby87
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