Beginning from the primordial globin gene, how many gene duplications were required to yield the beta subunit of hemoglobin

Which are forms of nitrogen that are usable by humans

To determine if a particular plant is homozygous or heterozygous, you would have to test cross with a

What is the best conclusion based on this data? the hypothesis was not supported because the data indicated that fertilizing plants does not improve plant growth. the hypothesis was supported; to get the best growth, use 5 milliliters of fertilizer per plant. the hypothesis was not supported; the data indicated that too much fertilizer can inhibit plant growth. the hypothesis was supported; to get the best growth, use 15 milliliters of fertilizer per plant.