1. Make a Punnett square showing what would happen if an organism with the genotypes BbLl and BbLl mated. 2. Using the chart, assume that all offspring with a genotype involving dominant B die off before mating. What genotypes would be left to carry on the species?

3. Mate two of the offspring who are left and show the punnett square.

4. Mate the remaining two offspring and show the punnett square.

5. Did the removal of one dominant trait wind up affecting the proliferation of the other dominant trait? Explain.

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explanation:

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step 1: nitrogen fixation- conversion of atmospheric no₂ into forms useful to plants by lightning, bacteria, and cyanobacteria.

step 2: nitrification-process of converting ammonia to nitrite or nitrate.

step 3: assimilation-plant roots absorb new form of nitrogen.

step 4: ammonification-conversion of organic nitrogen to ammonia by bacteria involved in decomposition.

step 5: denitrification-bacteria turns the decomposed matter back into n₂o, which is released into atmosphere; repeat cycle.