Matt Is Colour Blind, Yet Both of His Parents and His

question 87

Multiple Choice

Matt is colour blind, yet both of his parents and his sibling have normal colour vision.One of Matt's grandparents is also colour blind.Which of Matt's grandparents is most likely to be colour blind?

• A)his maternal grandfather
• B)his maternal grandmother
• C)his paternal grandfather
• D)his paternal grandmother

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Definitions:

Sarcomere Distance

The length between two Z lines in a muscle fiber, defining the fundamental unit of muscle contraction.

Muscle Twitch

Single contraction of a muscle fiber; typically lasts only a fraction of a second.

Contraction Period

The phase during muscle activity where the muscle fibers shorten, generating force.

Muscle Fibers

Long, slender cells that make up muscles, enabling contraction and movement.