The Oxygen That Arose in Early Earthʹs Atmosphere Was Likely

question 64

Multiple Choice

The oxygen that arose in early Earthʹs atmosphere was likely produced by organisms that were very similar to modern

• A) algae.
• B) cyanobacteria.
• C) plants.
• D) fungi.
• E) protists.

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Definitions:

Igf2

Insulin-like Growth Factor 2, a protein involved in cellular growth, development, and function, playing a critical role in prenatal growth and development.

Igf2r

A gene that encodes the insulin-like growth factor 2 receptor, involved in various cellular processes including growth, development, and apoptosis.

Parental Fitness

The genetic contribution of parents to the next generation's gene pool, usually measured by the number of offspring that survive to reproductive age.

Extrinsic Mortality

The death rate from external factors, outside the organism's control, such as predation or accidents, as opposed to intrinsic factors like aging.