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Inheritance
Unit 2 biology test revision
| Question | Answer |
|---|---|
| Mutant | Errors in photosynthesis or a change in the gene |
| Wild-type | The most common phenotype in a population Flies- Red eyes and brown bodies |
| Pure breeding | An Organism that always passes down certain phenotypic traits |
| independent assortment | The random orientation of homologous chromosomes along the metaphase plate during metaphase |
| Homozygous | Having identical alleles for the same gene on homologous chromosomes |
| Heterozygous | Having different alleles for the same gene on homologous chromosomes |
| Monohybrid cross | A genetic cross performed to observe the inheritance of alleles and phenotype for a single gene |
| Dihybrid cross | A genetic cross used to observe the inheritance of alleles and phenotype for two genes |
| Recessive phenotype | The individual must have two copies, one from each parents |
| dominant phenotype | The inheritance of at least one dominant allele |
| Allele | Alternative forms of a gene |
| Explain the difference between complete, incomplete dominance and co-dominance. Include an example in your answer | Complete dominance is where only dominant alleles form in the genotype and is expressed in the phenotype. Co-dominance is both alleles from the genotype are dominant. Incomplete dominance is where neither allele from the phenotype are dominant. |
Created by:
claremont
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