1) a lichen is actually composed of two organisms: a fungi and a blue-green algae. both organisms benefit from this relationship. what would we call this relationship? a. mutualism b. parasitism c. predation 2) in any ecosystem, the organisms for resources, such as food, water, and space. a. compete b. fight c. kill 3) in the savanna, a lion would be the while the water buffalo would be the a. predator, prey b. prey, predator c. parasite, host

Considering the yellow and green pea color phenotypes studied by gregor mendel: a. what is the biochemical function of the protein that is specified by the gene responsible for the pea color phenotype? (1 point) b. a null allele of a gene is an allele that does not specify (or encode) any of the biochemical function that the gene normally provides (in other words, either no protein at all or only non-functional protein is produced from it). of the two alleles, y and y, which is more likely to be a null allele? (1 point) c. in terms of the underlying biochemistry, why is the y allele dominant to the y allele? (2 points) d. why are peas that are yy homozygotes green? (1 point) e. the amount of protein produced from a gene is roughly proportional to the number of functional copies of the gene carried by a cell or individual. what do the phenotypes of yy homozygotes, yy heterozygotes, and yy homozygotes tell us about the amount of sgr enzyme needed to produce a yellow color? explain your reasoning. (2 points)

What did hunter gathers do to alter the environment?

Do you think the gene eef1 alpha1 supports cell theory? explain your response.