Question

you have three cell types: a, b, and c. after close examination, you hypothesize that cell c is the result of an endosymbiotic relationship between cell a and cell b, where a was internalized by b. which result would help provide evidence in support of your hypothesis?
nuclear dna sequences in cell b show overlap with nuclear dna of cell a.
nuclear dna sequences in cell c show overlap with nuclear dna of cell a.
dna sequences from organelles in cell c show overlap with nuclear dna of cell a.
nuclear dna sequences in cell c show no overlap with organelle dna sequences in cell c.
dna sequences from various organelles within cell c show overlap with one another.

Explanation:

The endosymbiotic theory posits that organelles like mitochondria and chloroplasts were once free - living prokaryotes that were engulfed by a host cell. If cell C is the result of an endosymbiotic relationship where A was internalized by B, the organelles in cell C (derived from cell A) should have DNA similar to the nuclear DNA of cell A. This would show that the organelles in cell C have a genetic origin related to cell A, supporting the endosymbiotic hypothesis.

Answer:

C. DNA sequences from organelles in cell C show overlap with nuclear DNA of cell A.