The Physical Appearance of an Organism Is Called

question 37

Multiple Choice

The physical appearance of an organism is called

• A) the phenotype.
• B) the genotype.
• C) an allele.
• D) a trait.
• E) a gene.

---

Definitions:

Keratinized Cells

Cells that are filled with the protein keratin, making them tough and water-resistant, as seen in skin, hair, and nails.

Lunula

The lunula is the crescent-shaped white area at the base of a fingernail or toenail, visible as part of the nail's growth area.

Hair Papilla

A small, cap-shaped cluster of cells located at the base of the hair follicle, playing a crucial role in hair growth.

Capillaries

Capillaries are the smallest blood vessels in the body's circulatory system, facilitating the exchange of water, oxygen, carbon dioxide, and many other nutrients and waste substances between blood and surrounding tissues.