In a Cross of a Homozygous Dominant Parent and a Homozygous

question 1

Multiple Choice

In a cross of a homozygous dominant parent and a homozygous recessive parent,what is the ratio of offspring that will exhibit the recessive phenotype?

• A) 0.
• B) 1/4.
• C) 1/2.
• D) 3/4.
• E) 1.

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Definitions:

Irrigate Eye

The process of cleaning or flushing the eyes with a fluid, often to remove foreign substances or relieve discomfort.

Rinne Test

A hearing test using a tuning fork to compare air conduction and bone conduction of sound in each ear.

Mastoid Bone

A bone located behind the ear, part of the temporal bone, containing air cells that can become infected in mastoiditis.

Obturator

Anything that obstructs or closes a cavity or opening; refers to that internal portion of an examining instrument that facilitates the introduction of the instrument into the body and is then withdrawn, permitting visualization of the internal area.