Classify the examples as pre‑zygotic or post‑zygotic barriers. Answer BankThe breeding season of the Red-legged Frog occurs from November to late April, whereas the breeding season for the Yellow-legged Frog occursfrom late April to June.Two species of Drosophila have incompatible alleles resulting in inviable hybrids.Lions and tigers can mate, but their resulting offspring are sterile.While the Giant Red Sea Urchin and the Purple Red Sea Urchin release their gametes into the same oceans, their respective gametes do not recognizeeach other, thus preventing their interbreeding.

Prezygotic barriers prevent mating or fertilization, while postzygotic barriers prevent the…

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Classify the examples as pre‑zygotic or post‑zygotic barriers.

BIOLOGY:CONCEPTS+APPL.(LOOSELEAF)

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Chapter14: Human Inheritance

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Problem 2GP: Human females have two X chromosomes XX; males have one X and one Y chromosome XY. a. With respect...

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Concept explainers

Human Evolution

Human evolution is the process of evolution of humans from early man to anatomically modern humans. The process of evolution in humans leads to the gradual development of traits like bipedalism. Humans are the highly social animals that make them the most advanced animal on Earth. Human evolution is an outcome of interaction among the following processes:

Question

Classify the examples as pre‑zygotic or post‑zygotic barriers.

Answer Bank
The breeding season of the Red-legged Frog occurs from November to late April, whereas the breeding season for the Yellow-legged Frog occurs
from late April to June.
Two species of Drosophila have incompatible alleles resulting in inviable hybrids.
Lions and tigers can mate, but their resulting offspring are sterile.
While the Giant Red Sea Urchin and the Purple Red Sea Urchin release their gametes into the same oceans, their respective gametes do not recognize
each other, thus preventing their interbreeding.

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