Help me please I will help you but I just need one answer for this and this

Which of the following describes how binary fission and mitosis are similar? a)they are both used for growth or repair b)they both break down membrane-bound nuclei c)both invoke the replication of a single stand of dna d)both replicate genetic material

Which individual below would be considered heterozygous? a.dd b.dd c.dd

Can someone give me the answers to this?