Fred and Ed Are Identical Twins Who Are 8 Years

question 57

Multiple Choice

Fred and Ed are identical twins who are 8 years old.They both attend the same school and live together in the same household.How would Rowe and Plomin characterize these factors?

• A) nonshared environmental
• B) shared hereditary
• C) shared environmental
• D) nonshared hereditary

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Definitions:

Planaria

A genus of flatworms known for their remarkable ability to regenerate, commonly studied in research on regeneration and stem cells.

Muscular Pharynx

The muscular pharynx is a part of the digestive and respiratory systems, playing a crucial role in swallowing and the passage of air and food.

Epidermal Surface

The epidermal surface is the outermost layer of the skin or the outer surface layer of plants, protecting against environmental damage and water loss.

Ectoparasites

Parasites that live on the external surface of a host, such as lice and ticks, causing irritation or disease.