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  3. North-West University (NWU)
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  5. Psychology (PSYC211)

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Summary The formation of a new life notes simplified
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These notes provide you with notes on the formation of a new life, providing the reader with possible exam questions and the notes are simplified.

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  • November 14, 2022
  • 10
  • 2022/2023
  • Summary

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CHILD AND ADOLESCENT DEVELOPMENT


PSYC 211



THE FORMATION OF A NEW LIFE

, Conceiving new life
A prenatal development has an important effect on postnatal development.
What does psychogenetics mean?
➢ Psychogenetics is the study of the genetic basis of behaviour which has 23
chromosomes. It consists of the prenatal period and stages which the x
represents the girl sperm, and the y represents the boy sperm. The prenatal
environment influences.


THE PRENATAL PERIOD
The prenatal stage is an important biological mechanism that
play a role in the formation of a new life.
How does the conception of the prenatal stage take place?
➢ There are 500 million sperm cells which penetrates the ovum and
fertalisation occur.
➢ There is 280 days before birth occurs.
➢ The egg and sperm cells are called the gametes or the sec cells.
➢ The fertilised egg is called a zygote.
➢ The egg cells (ova) are the biggest cells in the human body.
➢ The ova are produced in ovaries.


Mechanisms of heredity
➢ A normal human zygote consists of 46 chromosomes which has 23 pairs.
➢ A chromosome is made up of Genes.
➢ Genes are the smallest units of heredity and are the carriers of human
heredity characteristics.
What is the difference between a DNA and RNA?
➢ A DNA is a deoxyribonucleic acid or a chemical basis of heredity that
contains a heredity information that serves as a blueprint for chemical
function.

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