PSY 1200 Chapter Notes - Chapter Chapter 1: Prenatal Development, Zygote, Egg Cell

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unknown924

28 May 2023

School

Fitchburg State

Department

Psychological Science

Course

PSY 1200

Professor

Hildy Schilling

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niche-picking refers to finding a setting that is suited to one’s genetically

influenced abilities.

an epigenetic view which states that development is the result of an

ongoing, bidirectional interchange between heredity and the

environment.

4 Prenatal

Development

Conception occurs when a single sperm cell from a male unites with an

ovum (egg) in a female’s fallopian tube in a process called fertilization.

Over the next few months the genetic code discussed earlier directs a

series of changes in the fertilized egg, but many events and hazards will

influence how that egg develops and becomes a person.

Prenatal development lasts approximately 266 days, beginning with

fertilization and ending with birth. It can be divided into three periods:

germinal, embryonic, and fetal.

The Germinal Period

The germinal period is the period of prenatal development that takes place in the

first two weeks after conception. It includes the creation of the fertilized egg (the

zygote), cell division, and the attachment of the zygote to the uterine wall.

Rapid cell division by the zygote begins the germinal period. (Recall from earlier

in the chapter that this cell division occurs through a process called mitosis.) By

approximately one week after conception, the differentiation of these cells—their

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Document Summary

Niche-picking refers to finding a setting that is suited to one"s genetically influenced abilities. an epigenetic view which states that development is the result of an ongoing, bidirectional interchange between heredity and the environment. Conception occurs when a single sperm cell from a male unites with an ovum (egg) in a female"s fallopian tube in a process called fertilization. Over the next few months the genetic code discussed earlier directs a series of changes in the fertilized egg, but many events and hazards will influence how that egg develops and becomes a person. Prenatal development lasts approximately 266 days, beginning with fertilization and ending with birth. It can be divided into three periods: germinal, embryonic, and fetal. The germinal period is the period of prenatal development that takes place in the first two weeks after conception. It includes the creation of the fertilized egg (the zygote), cell division, and the attachment of the zygote to the uterine wall.

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PSY 1200 Chapter Notes - Chapter Chapter 1: Prenatal Development, Zygote, Egg Cell

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