Can sum body help me with this

How did the research presented in the article affect scientists' understanding of the evolution of eukaryotes

How many copies of each chromosomes should be present in each of the 4 final haploid versions of gamete?

Ascientist discovers a new body between the orbit of neptune and the kuiper belt. the object is round and travels in an orbit around neptune with other space objects. the scientist claims that she has found a new dwarf planet. where is the scientist’s error?