Developmental biologyLesson 1 of 4 in the course Animal Reproduction and Development

Animal Reproduction: Asexual Strategies, Sex Determination, and Sex Change

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

Save course
Lesson progress
0 / 5

Your progress is kept in this browser only.Sign up to save it

Summary

Animals can reproduce asexually, sexually, or by using both methods. This lesson focuses on how asexual reproduction works and how its benefits and limitations compare with sexual reproduction.

Asexual reproduction produces offspring from a single individual without combining reproductive cells from two parents. The offspring are generally genetically identical to the parent and to one another, so they are often described as clones. Mutations can still introduce differences.

All flashcards

Fission
An organism divides into two separate organisms after a period of growth.
Budding
An outgrowth develops on a parent and becomes a new individual; it may detach or remain attached.
Parthenogenesis
The development of an individual from an unfertilized egg; offspring may be haploid or diploid.
Hermaphroditism
Having both male and female reproductive parts; an individual may self-fertilize or mate with another.
Protogyny and protandry
Sequential sex change: protogyny is female first, then male; protandry is male first, then female.

Quiz questions

  1. Why are offspring from asexual reproduction generally described as clones?Answer: They usually have genetic material identical to that of their single parent.
  2. Which situation is most likely to favor asexual reproduction?Answer: A stable environment in which the parent is already well adapted.
  3. How do buds typically differ between hydras and many corals?Answer: Hydra buds detach; coral buds often remain attached and grow the colony.
  4. A separated body part regenerates into a complete animal. Which reproductive method does this describe?Answer: Fragmentation
  5. In bees, what typically develops from an unfertilized egg?Answer: A haploid male called a drone.

Based on Biology 2e by Mary Ann Clark, Matthew Douglas, Jung Choi (OpenStax), licensed CC BY 4.0. Adapted into a summary, flashcards and quizzes.

More in Developmental biology

All Developmental biology lessons
Developmental biologyPrenatal Development, Pregnancy Risks, and Prenatal Care5 flashcards · 5 quiz questions · 4 gamesPlay free →Developmental biologyAnimal Reproduction: Strategies, Sex Determination, and Development5 flashcards · 5 quiz questions · 4 gamesPlay free →Developmental biologyFertilization, Early Embryogenesis, and Prenatal Genetic Diagnosis5 flashcards · 5 quiz questions · 4 gamesPlay free →Developmental biologyEmbryonic Heart Tube Formation, Looping, and Septation5 flashcards · 5 quiz questions · 4 gamesPlay free →Developmental biologyHuman Reproduction: Pregnancy, Birth, Contraception, and Infertility5 flashcards · 5 quiz questions · 4 gamesPlay free →Developmental biologyHuman Fetal Development: Sexual Differentiation, Circulation, and Maturation5 flashcards · 5 quiz questions · 4 gamesPlay free →