What begins as a single-cell structure that is created when a sperm and egg merge at conception?

- [x] Zygote
- [ ] Embryo
- [ ] Fetus
- [ ] Blastocyst

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A zygote is the single cell created when a sperm and an egg fuse. Because the egg and the sperm each carry 23 chromosomes, their fusion results in a zygote with a total of 46 chromosomes, arranged in 23 pairs. Through this process, each parent contributes half of the offspring's genetic information.

Zygote

Spielman, R. M., Jenkins, W. J., & Lovett, M. D. (2020, April 22). Psychology (2nd ed.). OpenStax. https://openstax.org/books/psychology-2e/pages/1-introduction

OpenStax Psychology (2nd ed.) Textbook

A new organism begins as a single-cell structure formed by the fusion of a sperm and an egg. Which of the following statements best analyzes the genetic composition of this initial cell?

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