The Evolution of Eukaryotic Cells Most Likely Involved ________

question 9

Multiple Choice

The evolution of eukaryotic cells most likely involved ________.

• A) endosymbiosis of an aerobic bacterium in a larger host cell-the endosymbiont evolved into mitochondria
• B) anaerobic archaea taking up residence inside a larger bacterial host cell to escape toxic oxygen-the anaerobic bacterium evolved into chloroplasts
• C) an endosymbiotic fungal cell evolving into the nucleus
• D) acquisition of an endomembrane system and subsequent evolution of mitochondria from a portion of the Golgi apparatus

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Definitions:

Fertilized

The state or process where a sperm cell successfully merges with an egg cell, beginning the development of a new organism.

Monozygotic Twins

Twins that are genetically identical because they were formed from a single fertilized egg that split into two.

Identical Twins

Twins resulting from the division of a single fertilized egg, sharing 100% of their genetic material and typically having very similar appearances and traits.

Heritability Estimates

Statistical measures of the degree to which genetic factors account for variation in a trait among individuals within a population.