Which of the Following Statements About Human Evolution Is Correct

question 58

Multiple Choice

Which of the following statements about human evolution is correct?

• A) Modern humans are the only human species to have evolved on Earth.
• B) Human ancestors were virtually identical to extant chimpanzees.
• C) Human evolution has occurred within an unbranched lineage.
• D) The upright posture and enlarged brain of humans evolved separately.

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Definitions:

Morphogen

Any chemical agent thought to govern the processes of cell differentiation and pattern formation that lead to morphogenesis.

Maternal Effect Genes

Genes whose expression in the mother's egg controls the phenotype of the offspring, regardless of the offspring's own genotype.

Metastatic Tumors

Tumors that have spread from their original location to other parts of the body, typically leading to more severe health complications.

Neoplasms

Neoplasms are abnormal masses of tissue that result from excessive, uncoordinated growth of cells and can be benign or malignant (cancerous).