Answer:
1. C
2. B
If I'm wrong sorry but overall I think those are the right answers.
Myocardial conduction cells are connected by cardiac muscle tissues
I'm not sure but I thinks the first animal that produce bacteria is Pig.
10 chromosomes. After telophase and cytokinesis, the new daughter cells will each have 10 chromosomes, which is identical to the parental cell. Human cells have 23 pairs of chromosomes.
So other scientists can try the exact same experiment and see if they both got the same results.