Martha Has Widow's Peak and Attached Earlobes

question 49

Multiple Choice

Martha has widow's peak and attached earlobes.Martha's dad had a straight hairline and unattached earlobes.If Martha marries a man that is heterozygous for both traits,what is the probability that they will have a child with a widow's peak and attached earlobes?

• A) 1/16
• B) 1/8
• C) 1/4
• D) 1/2
• E) 3/4

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Definitions:

Ligaments

Tough, fibrous connective tissue that connects bones to other bones.

Fibroblast

A type of cell that produces collagen and other fibers, playing a critical role in wound healing and tissue repair.

Tissue with Chondrocytes

Cartilaginous tissue, which contains cells known as chondrocytes that are responsible for the production and maintenance of cartilage.

Chondrocytes

Cells that are found within cartilage and are responsible for maintaining the cartilaginous matrix.