Holoprosencephaly and Proboscis Are Most Likely to Be Found in a Fetus

question 23

Multiple Choice

Holoprosencephaly and proboscis are most likely to be found in a fetus with which one of the following?

• A) Trisomy 13
• B) Trisomy 18
• C) Trisomy 21
• D) Turner syndrome

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Definitions:

Water Table

The level below the Earth's surface where the ground is completely saturated with water, forming the upper surface of the groundwater.

Ground Water

Underground water stored in soil or within rock pores and cracks.

Hydraulic Gradient

The slope of the water table or potentiometric surface, indicating the direction and rate of groundwater flow.

Limestone Cave

A natural underground space formed by the dissolution of limestone rock by water.