SciHawks

Bio- we discussed the two possible crosses between an organism that shows the DOMINANT phenotype (either the TT genotype or the Tt genotype will cause the dominant phenotype of tallness in pea plants) and an organism that shows the RECESSIVE phenotype (which MUST be the tt genotype, only).
By analyzing the percentage of offspring with the dominant or the recessive phenotype, we could infer/conclude the GENOTYPES of the parents even though we cannot physically see the genes because they are at the molecular size level.

We then saw that not all genes come in just the dominant and recessive forms.
There are two distinct types of INTERMEDIATE DOMINANCE:
1. CODOMINANCE: occurs when BOTH alleles are expressed fully and SEPARATELY (NO BLENDING!) phenotypically. The notation used is a capital letter for the trait with a SUPERSCRIPT of the actual allele type; for example, a roan horse has both red AND white hairs, so the alleles are written C^R and C^W.
2. INCOMPLETE DOMINANCE: occurs when BOTH alleles BLEND together to form a SINGLE intermediate trait. The notation is just a capital letter of each allele type; for example, a RED carnation (RR) crossed with a WHITE carnation (WW) will form PINK carnation (RW) offspring because both traits are expressed and blended together (NOT SEPARATE AS IN CODOMINANCE).

Chem 7/8- we reviewed the factors/stresses that can increase or decrease the rate of a reaction.
We drew out and focused on the stress of changing the CONCENTRATION of reactants or products in a system that is currently at equilibrium.
We saw that, if the forward reaction rate can be increased more than the reverse reaction rate, there will be an equilibrium SHIFT towards the products (product concentrations increase while the reactant concentrations decrease). If the reverse reaction rate can be increased more than the forward reaction rate, there will be an equilibrium SHIFT towards the reactants (reactant concentrations will increase while product concentrations decrease).
We also saw that, if the forward reaction rate can be DEcreased more than the reverse reaction rate, there will be an equilibrium SHIFT towards the reactants (reactant concentrations increase while the product concentrations decrease). If the reverse reaction rate can be DEcreased more than the forward reaction rate, there will be an equilibrium SHIFT towards the products (product concentrations will increase while reactant concentrations decrease).

We then did a lab activity that was ANALOGOUS to a process that reaches equilibrium.

Chem 9-we reviewed the factors/stresses that can increase or decrease the rate of a reaction.
We drew out and focused on the stress of changing the CONCENTRATION of reactants or products in a system that is currently at equilibrium.
We saw that, if the forward reaction rate can be increased more than the reverse reaction rate, there will be an equilibrium SHIFT towards the products (product concentrations increase while the reactant concentrations decrease). If the reverse reaction rate can be increased more than the forward reaction rate, there will be an equilibrium SHIFT towards the reactants (reactant concentrations will increase while product concentrations decrease).
We also saw that, if the forward reaction rate can be DEcreased more than the reverse reaction rate, there will be an equilibrium SHIFT towards the reactants (reactant concentrations increase while the product concentrations decrease). If the reverse reaction rate can be DEcreased more than the forward reaction rate, there will be an equilibrium SHIFT towards the products (product concentrations will increase while reactant concentrations decrease).