Monday, April 12, 2010

 

Mon-Day 2

Bio - we went through a full example of a trait involving a dominant and recessive allele combination of the gene for pea seed shape (round or wrinkled); we determined the dominant allele and then did a "test cross" to show whether the dominant phenotype (round) parent was homozygous dominant or a heterozygote. We did so by drawing out the possible Punnet squares for each of the two cases and comparing the predicted results to the actual results.
We then began to discuss other possible relationships of allele/gene expression: COdominance in which BOTH alleles are expressed in the individual or INCOMPLETE DOMINANCE in which a NEW, BLENDED combination of the two allele traits gives a new "averaged" trait e.g. red and white alleles cause a "pink" color when the alleles are expressed together via incomplete dominance.


AP Chem - CHECK OUT Blackboard to quickly get up to speed on Ksp, slightly soluble salt equilibria: there are great tutorials/sample solved problems, and a study guide.

We finished up polyprotic acid titration and segued that right into a buffer calculation problem involving the choice of various salts of given pKa or pKb of its ions.

We then started the most complex unit of this course: sparingly soluble salt equilibria. We started with some strict definitions and some step-by-step conversions so that we can then launch into more complex and practical problems.



<< Home

This page is powered by Blogger. Isn't yours?