1. In humans, sickle-cell anemia is an example of co-dominance, when considered at the molecular level. People who are homozygous dominant produce all normal-shaped hemoglobin molecules. Hemoglobin is a protein found in red blood cells that carries oxygen. People who are homozygous recessive produce all abnormally-shaped hemoglobin, which cannot carry oxygen very well. […]

1. Focusing on how lifestyle choices affect the cardiovascular system, identify a lifestyle choice (specific foods in diet, exercise, smoking, etc…) and briefly explain the structural &/or functional influences of this lifestyle choice in the development of cardiovascular disease. 2. Though some people clearly benefit from lifestyle choices promoting cardiovascular […]

8. (TCO 3) Which happens to the substance that is oxidized during an oxidation-reduction reaction? (Points : 4)        It gives up hydrogen atoms.       It takes on oxygen atoms.       It becomes a charged species.       It shows a gain of electrons.       It shows a loss of electrons.  Question 9.9. (TCO 4) Ammonia (NH3) accepts a proton from water. Which […]

A line of Drosophila melanogaster with ebony body and sepia eyes (line A) is crossed to a line with tan body and red eyes (line B). The F1 are all tan-bodied, redeyed. a) (one point) What proportion of gametes produced by the F1 have the dominant allele for both loci? […]