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Genetics
The feild of biology devoted to understanding how characteristics are passed from parent to offspring
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Heredity
The trasmition of characteristics from parent to offspring.
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Trait
- a gentically determined variant of a characteristic.
- EX. Yellow color of a flower
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Pollination
Pollen grains produced in the male reproductive parts of a flower are transfered to the female reproductive parts of the flower.
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Self-Pollination
Pollen is transferred from the anthers of a flower to the stigma of either that flower or another flower of the same plant.
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Cross-Pollination
Pollen is transferred from the anthers of a flower to the stigma of a different plant.
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True-breeding
- Pure, for a trait always produced offspring with that trait when they self-pollinate.
- EX: pea plants with yellow pods self-pollinate to produce yellow pods.
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P generation
True-breeding parents
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F1 Generation
Offspring of the true-breeding parents.
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F2 Generation
Self-pollinated offspring of the F1 Generation.
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Dominant
- The factor that masked the factor for the other trait.
- EX: Tt, Pp, Gg
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Recessive
- Weaker Gene of the two, for it to appear it needs to be paired with the same Gene.
- EX: rr, tt, yy
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Law of segregation
a pair of factors (genes) is segregated or separated during the frmation of gametes.
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Independant Assortmane
factors separated independently of one another during the formation of gametes
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Molecular gentetics
study of the structure and function of chromosomes and genes
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Alleles
Each of the two or more alternate forms of a gene
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