The answer of your question in number 1 is "hybridization". It is breeding two dominant alleles that expresses both phenotype and this is an example of codominance. The answer of your question in number 2 is "The bacteria will produce human hemoglobin and its own baterial proteins". The process of genetic engineering will result the production of bacteria with human hemoglobin that was inserted to it.
The answer to your is:
Lysosomes
Answer:
A. Commensalism because the flatworm benefits while the horseshoe crab doesn't but isn't affected.
B. Predator-prey since the shark is the predator and the seal is the prey.
C. Competition because the two males are fighting for the female.
Hope this helps :)