Which of the following will occasionally produce a duplicate gene?

a chromosome replication during mitosis

b crossing-over during meiosis

c neutral mutation during transcription

d genetic drifts during reproduction

PLEASE HELP

Does mitochondria still meet the definition of a eukaryote why or why not?

Explain the difference between incomplete dominance and codominance

Legumes, a type of plant, require rhizobia, a type of soil bacteria, to survive since these organisms fix nitrogen during photosynthesis. rhizobia use the legumes for food. what would most likely happen to the legume population if rhizobia suddenly became extinct?