Sunday, January 25, 2015

January 15, 2015

          Our teacher gave us an activity on what we know about Non Mendelian Modes of Inheritance. She told us to write our ideas in a 1/4 sheet of paper. At first I don't have any idea about it but when Ma'am Ruby discussed the lesson I learned that in Incomplete Dominance is a mix up of two different alleles that may result a third phenotype. (combination of the dominant and recessive phenotype) 
        Example of this is seen in a cross-pollination experiment between red and white snapdragon plants. The dominant allele that produces the color is not completely expressed over the recessive allele that produces white color and the resulting offspring is pink.


In Co-Dominance, the hetero zygote condition manifest BOTH extreme phenotypes.


In Pleiotropy, one gene can affect multiple traits and the affected individuals may express different subsets of symptoms that may superficially appears as if they are different disorders. 


In Multiple Alleles, there are at least three types of alleles for a particular trait, with two alleles occupying a single locus at any given time. 


In Sex-influenced Traits, these are the traits which occurs more in one gender over the other.


In Sex-limited Traits, these are the traits that is restricted to only one gender.


In Lethal Genes/Alleles, these are alleles that can cause the death of an organism: dominant lethal genes kill hetero zygotes, whereas recessive lethal genes kill homo zygotes.









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