Mendelian genetics
To understand Mendelian genetics you need to understand Mendel's two laws.
- The principle of segregation : The two members of a gene pair separate from each other in the formation of gametes. Half the gametes carry one allele, and the other half carry the other allele.
- The principle of independent assortment: Genes for different traits assort independently of one another in the formation of gametes.
- The law of dominance: States that one of the factors for a pair of inherited traits will be dominant and the other recessive, unless both factors are recessive.
mendels crosses
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important conclusions
1.The inheritance of each trait is determined by "units" or "factors" that are passed on to descendents unchanged.
2.An individual inherits one such unit from each parent for each trait.
3.A trait may not show up in an individual but can still be passed on to the next generation.
2.An individual inherits one such unit from each parent for each trait.
3.A trait may not show up in an individual but can still be passed on to the next generation.
helpful resources
Pictures Cited: http://i2.cdn.turner.com/cnnnext/dam/assets/140916185755-03-dna-helix-0916-super-169.jpg
http://blog.unicasport.com/wp-content/uploads/Check-all-the-peas-health-benefits.jpg
http://biology.kenyon.edu/courses/biol114/KH_lecture_images/Mendel/FG10_04.JPG
http://spot.pcc.edu/~jvolpe/b/bi102/lec/wk2/image/figure10.5top.jpg
http://0.tqn.com/d/biology/1/0/Y/W/dihybridcross.jpg
http://anthro.palomar.edu/mendel/images/first_cross_pollination.gif
http://anthro.palomar.edu/mendel/images/same_ratio_in_later_generations.gif
http://blog.unicasport.com/wp-content/uploads/Check-all-the-peas-health-benefits.jpg
http://biology.kenyon.edu/courses/biol114/KH_lecture_images/Mendel/FG10_04.JPG
http://spot.pcc.edu/~jvolpe/b/bi102/lec/wk2/image/figure10.5top.jpg
http://0.tqn.com/d/biology/1/0/Y/W/dihybridcross.jpg
http://anthro.palomar.edu/mendel/images/first_cross_pollination.gif
http://anthro.palomar.edu/mendel/images/same_ratio_in_later_generations.gif