Latrice Was Born with an Extra Fold of Skin at the Corners

question 107

Multiple Choice

Latrice was born with an extra fold of skin at the corners of her eyes,a small head,protruding tongue,and mental retardation.She probably has

• A) Turner's syndrome.
• B) Klinefelter's syndrome.
• C) Down syndrome.
• D) hemophilia.

---

Definitions:

Postzygotic Barriers

Reproductive barriers that occur after fertilization, preventing successful development, survival, or reproduction of hybrid offspring.

Flicker Hybrid Zone

A hypothetical or unverified term in biology; potentially refers to a region where closely related species with marginal differences, akin to light flickers, meet and hybridize.

Stable Hybrid Zone

An area where two distinct species meet and interbreed, yet remain genetically distinct due to limited gene flow.

Reinforcement

The increase in reproductive isolation that often occurs over time in a hybrid zone because natural selection strengthens and increases the number of prezygotic barriers between the two species.