Wednesday, April 27, 2016

Heredity Crash Course ( Dajhauna Wormley )

 1. Heredity is the passing on of traits from parents to offspring 
2. Aristotle said " we're each a mixture of our parents traits with the father supplying life force and the mother supplying the building blocks "
3. Human Cells have 23 pairs of Chromosomes 
4. Genes are sections of DNA 
5. There are specific locations on chromosomes that contain information that determines a trait.
6. Polygenic Triat - a bunch of different genes working together.
7. Pleiotropic - a single gene can influence how multiple traits can be expressed ( ex: color )
8. Mendelian Trait - example .. dryness or wetness of earwax located at same spot ( chromosome 16 )
9. Gametes - sex cells 
10. Polyploid cells mean they have more than two sets of chromosomes In each cell.
11. When there are two alelles that decide the outcome of the specific trait, one of those could be dominant and the other recessive.
12. Just because an allele is recessive , does not meant is less common in each when ethic material. 
13. Everyone inherits two alleles from their parents.
14. Phenotype is expressed physically. 
15. Males are XY and females are XX.

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