Although Natural Selection Operates Upon the Phenotype

question 81

Multiple Choice

Although natural selection operates upon the phenotype:

• A)only dominant alleles are passed on to the next generation
• B)new physical traits caused by environmental stresses can be passed on to the next generation
• C)only beneficial alleles are passed on to the next generation.
• D)none of the above

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Definitions:

Glomerulus

A network of small blood vessels in the kidneys where filtration of blood occurs, initiating the process of urine formation.

Afferent Arteriole

Branch of an interlobular artery of the kidney that conveys blood to the glomerulus.

Arcuate Artery

Artery that originates from the interlobar arteries of the kidney and forms an arch between the cortex and medulla of the kidney.

Simple Cuboidal Epithelium

A single layer of cube-shaped cells common in glandular ducts and parts of the kidney, specialized for secretion and absorption.