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Definition
| Austrian monk who used pea plants to study inheritance. |
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| Mendel's Law of Dominance |
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Definition
| One form of a trait dominates(suppress) the expression of a recessive trait. |
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| Mendel's Pea Plant experiment |
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Definition
| Cross-pollinated "pure" plants from a pure parent generation, 100% tall f1 generation. Crossed F1 generation and got 75% tall and 25% short. Concluded even though the recessive trait disappeared in the F1 it reappeared in F2. |
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| Conclusion of Mendel's Pea Plant |
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Definition
| Individuals have 2 factors (diploid). For each trait; recieving one factor(haploid) in the pollen and 1 factor(haploid) in the egg. |
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| Lower case of the dom. allele. |
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| Mendel's Law of Segregation |
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Definition
| During formation of pollen and eggs(meiosis) pairs of alleles are separated resulting in haploid gametes. |
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Definition
When several possible events may occur and now one event is more likely to occur than the other then they should occur in equal numbers.
Important when making predictions about the outcomes from a cross.
Results are due to chance.(Coin toss) |
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Definition
| R.C. Punett(geneticist) diagram used to predict the possible or expected outcome of a cross. |
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| Used to determine if a parent is heterozygous. |
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Definition
| Predict outcome from 2 traits. |
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| Steps to a dihybrid cross |
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Definition
| Parental genotypes, possible combo of alleles w/in parental gametes, FOIL, set up 4x4 Punnett Square. |
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Term
| Law of Independent Assortment |
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Definition
| Alleles for different traits are separated and distributed to gametes independently of one another. |
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Term
| Law of Incomplete Dominance |
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Definition
| 2 Dom alleles resulting in a 3rd phenotype, Japanese 4 O'Clock Flowers, red, pink, white |
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Definition
| 2 competing dom traits both expressed at the same time, coat color in some horses and cattle, pure red x pure white. 100% Roan. |
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| When 3 or more alleles exist to control a trait but the trait is still controlled by 2 alleles. Human Blood types, A,B,AB,o |
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Definition
| When many alleles have an addictive or cummulative effect on the phenotype, Human skin color, over 60 known loci |
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Definition
| Genetics and environment both contribute to gene expression. |
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