Basic Genetics for AP Biology Flashcards
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| 12743653888 | allele | The different forms of a gene |  | 0 |
| 12743653889 | dominant Allele | An allele whose trait always shows up in the organism when the allele is present |  | 1 |
| 12743653890 | recessive Allele | An allele that is hidden when a dominant allele is present |  | 2 |
| 12743653891 | homozygous | Having two identical alleles for a trait |  | 3 |
| 12743653892 | heterozygous | Having two different alleles for a trait |  | 4 |
| 12743653893 | genotype | An organisms allele combinations represented by letters |  | 5 |
| 12743653894 | phenotype | The expression of physical traits that appear in an individual as a result of its genotype |  | 6 |
| 12743653895 | incomplete dominance | A blended phenotype. One allele is not completely dominant over the other |  | 7 |
| 12743653896 | genotypic ratio | The percent of allele combinations that could appear in offspring, sometimes shown as fractions |  | 8 |
| 12743653897 | phenotypic ratio | The percent of physical traits that could appear in offspring, sometimes shown as fractions |  | 9 |
| 12743653898 | Gregor Mendel | The father of genetics - Experimented with pea plants in the 1800's |  | 10 |
| 12743653899 | chromosome | Coiled chromatin, 46 are found in human body cells |  | 11 |
| 12743653900 | mitosis | Cell division where the chromosomes in a cell nucleus are separated into two identical sets of chromosomes, each in its own nucleus. |  | 12 |
| 12743653901 | meiosis | Cell division that halves the number of chromosomes when forming sex cells |  | 13 |
| 12743653902 | punnett Square | A diagram that is used to predict possible outcomes in the offspring of a particular cross or breeding experiment. |  | 14 |
| 12743653903 | GG | Which genotype represents the homozygous dominant trait in this punnett square? |  | 15 |
| 12743653904 | Gg | Which genotype represents the heterozygous trait in this punnett square? | | 16 |
| 12743653905 | gg | Which genotype represents the homozygous recessive trait in this punnett square? | | 17 |
| 12743653906 | yellow | What is the phenotype of the homozygous dominant trait expressed in this punnett square? | | 18 |
| 12743653907 | purple | What is the phenotype of the heterozygous trait expressed in this punnett square? |  | 19 |
| 12743653908 | green | What is the phenotype of the homozygous recessive trait expressed in this punnett square? |  | 20 |
| 12743653909 | YY | What are the possible genotypes for yellow pods in this punnett square? |  | 21 |
| 12743653910 | yy | What are the possible genotypes for green pods in this punnett square? | | 22 |
| 12743653911 | sex Chromosome | The chromosomes involved in determining the sex of an organism. |  | 23 |
| 12743653912 | trait | Any characteristic that can be passed from parent to offspring |  | 24 |
| 12743653913 | heredity | The passing of traits from parents to offspring. |  | 25 |
| 12743653914 | genetics | The study of heredity. |  | 26 |
| 12743673239 | codominance | both alleles for a gene are expressed in a heterozygous individual |  | 27 |
| 12743694817 | polygenic trait | a single trait that is influenced by more than one gene. Examples include eye color, skin color and height in humans | 28 | |
| 12743838075 | Charles Darwin | 1800's scientist who first presented the ideas of evolutionary change |  | 29 |