Question

Some modern eukaryotes, such as Giardia intestinalis, lack mitochondria but still retain some of the genes for mitochondrial proteins. What logical conclusion can be drawn about these organisms?

Some time ago, these organisms exchanged genes another cell containing mitochondria.

During their evolution, these organisms also lost their ability to produce their own energy.

Based on a mutation during their evolution, these organisms are now unable to survive without a host cell.

At one point during their evolution, these organisms contained mitochondria.

Answer 1

D?

Answer 2

@Gabebro13

Answer 3

I'm here

Answer 4

Can you help please? i think its D is that correct?
@Gabebro13

Answer 5

Yeah, D is correct...