Two Parents with Widow's Peak and Short Fingers Have a Child

question 57

Multiple Choice

Two parents with widow's peak and short fingers have a child with a continuous hairline and long fingers.What are the genotypes of the two parents? (W = widow's peak; S = short fingers)

• A) WWSS x wwss
• B) wwss x WWSS
• C) WWss x WWss
• D) WwSs x WwSs
• E) WwSs x wwss

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Definitions:

Blastomeres

Cells formed in the early stages of embryonic development through a series of cleavage divisions from the zygote.

Embryonic Development

The series of biological changes that occur in the early stages of an organism's life, leading to its mature form.

Blastocyst

An early stage of embryonic development in mammals, characterized by a sphere of cells surrounding a fluid-filled cavity and the inner cell mass that will develop into the embryo.

Blastula

An early stage in embryonic development in animals, characterized by a sphere of cells (blastomeres) surrounding a fluid-filled cavity (blastocoel).