Answer:
The answer is:
A. An organism whose cells each contain a membrane-bound nucleus.
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Fossils can be used by examine their analogous structures...... give him Brainliest
2. The endosymbiotic theory suggests that a eukaryotic cell is the result of one prokaryotic cell eating another.
Answer:
15 chromosomes
Explanation:
The endosperm is formed through double fertilization where one male gamete nucleus with polar nuclei to form a triploid nucleus called the primary endosperm. The endosperm therefore will contain 15 chromosomes since the polar nuclei is diploid and the male gamete is haploid forming a triploid nucleus.