Developmental biologyLesson 1 of 1 in the course Animal Reproduction and Development

Animal Reproduction: Strategies, Sex Determination, and Development

5 flashcards · 5 quiz questions · 5 match pairs · 5 fill-in sentences · English

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Summary

Animals can reproduce in different ways. This lesson explores asexual reproduction, in which one parent produces offspring without combining reproductive cells with another individual. It also considers the benefits and limitations of this strategy.

In asexual reproduction, one individual produces offspring without the fusion of reproductive cells from two individuals. The offspring are generally genetically identical to the parent and to one another; they are often described as clones.

All flashcards

Fragmentation
Asexual reproduction in which an animal breaks into parts and sufficiently large parts regenerate into new individuals.
Hermaphroditism
A condition in which one animal has both male and female reproductive systems; many hermaphrodites mate with another individual.
Protogyny
Sequential sex change in which an individual develops first as a female and may later become male.
Spawning
Reproductive cells are released into the environment, often by females and males in the same place and at about the same time.
Intersex
A term for human variations in sex traits or reproductive anatomy that differ from typical patterns.

Quiz questions

  1. Which asexual process produces a new animal when an outgrowth grows on a parent and later separates?Answer: Budding
  2. What is parthenogenesis?Answer: Development of an individual from an unfertilized egg
  3. In the typical mammalian XY system, which chromosome combination is associated with male development?Answer: XY
  4. In the bird ZW system, which chromosome combination is typically associated with females?Answer: ZW
  5. In ovoviviparity, what primarily nourishes the embryo while the egg is retained inside the female?Answer: The egg's yolk

Based on Concepts of Biology by Samantha Fowler, Rebecca Roush, James Wise (OpenStax), licensed CC BY 4.0. Adapted into a summary, flashcards and quizzes.

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