NYSTCE 245 – Arts and Science Practice Exam 2025: All-in-One Study Guide for Guaranteed Success!

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What is a zygote?

A mature sperm cell

A fertilized egg

A zygote refers specifically to a fertilized egg, which is the result of the union between a sperm cell and an ovum (egg). This process occurs during fertilization when the genetic materials from both the male and female reproductive cells combine.

Once formed, the zygote undergoes a series of cell divisions as it develops into an embryo. It represents the earliest stage of development for a new organism, marking the beginning of a new genetic lineage. This definition is fundamental in the study of biology and reproductive science, as it encompasses key concepts related to development and cellular growth. Understanding the zygote's role is crucial for discussions around genetics, embryology, and reproductive health.

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A male reproductive cell

An unfertilized ovum

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