The Primary Reason That Sex-Linked Traits Are Observed More Frequently

question 9

Multiple Choice

The primary reason that sex-linked traits are observed more frequently in men than in women is that:

• A) mutations are much more common in male offspring
• B) male babies are weaker so are more likely to be spontaneously aborted if any developmental process is compromised
• C) the Y chromosome is much smaller and has fewer genes than the X chromosome
• D) women generally do not talk about sex-related behavior as much as do men

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Definitions:

Paranasal Sinuses

Air-filled spaces located within the bones of the skull and face, connected to the nasal cavity, that help humidify and filter air.

Cilia

Microscopic, hair-like structures that protrude from the surface of many cells, involved in movement and sensory functions.

Pharynx

The muscular tube that connects the mouth and nasal passages with the esophagus.

Tidal Volume

The amount of air that is inhaled or exhaled in a normal breath under resting conditions, important in respiratory physiology.