A Baby Is Diagnosed with Down Syndrome Shortly After Birth

question 10

Multiple Choice

A baby is diagnosed with Down syndrome shortly after birth.Which of the following events occurred abnormally during prenatal development?

• A) Anaphase of mitosis
• B) Metaphase of mitosis
• C) Telophase of mitosis
• D) Anaphase of meiosis
• E) Metaphase of spermatogenesis

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Definitions:

L-Altrose

A rare sugar of the aldohexose type, which is a stereoisomer of glucose and part of the allose family.

Structural Relationship

The connection or relation between the structures of molecules, including isomerism and conformations.

D-Gulose

An aldohexose sugar in the D-configuration, a stereoisomer of glucose with a specific arrangement of hydroxyl groups.

L-Gulose

A rare sugar, an isomer of glucose, not commonly found in nature.