Attached Earlobes Are Recessive to Free Earlobes

question 28

Multiple Choice

Attached earlobes are recessive to free earlobes. What genotypic ratio is expected when an individual with attached earlobes mates with an individual heterozygous for free earlobes?

• A)2:1
• B)1:1
• C)1:2:1
• D)3:1

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Definitions:

Hit

In general usage, an instance of something becoming very popular or successful; in specific contexts, it could have other definitions.

Sensory Adaptation

The process by which sensory receptors become less responsive to constant stimuli over time.

Absolute Threshold

The minimum intensity of stimulation that must occur before you experience a sensation.

Detection Threshold

The minimum level of intensity at which a stimulus is perceived or detected by the sensory system.