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Chapter 16 Human Sexual Reproduction System - Coggle Diagram
Chapter 16 Human Sexual Reproduction System
Function of the Human Sexual Reproductive System
Sexual Reproduction
Many organisms reproduce
sexually
This means their young are formed when the
nuclei of two sex cells join together
. The sex cells in humans are an
egg
cell and a
sperm
cell
These two cells are produced by different parts of the male and female reproductive systems
The fusion of sex cells is called
fertilisation
. When an egg cell is fertilised, it develops into an embryo and develops into a new individual. This new individual contains the
genetic material (DNA)
from both its parents
Heredity
The
passing down of genetic material
from one generation to the next during sexual reproduction is called heredity
Family Resemblance & Variations
Children
inherit traits or characteristics
from parents
Children are not identical to their parents and possess a mix of traits from both their parents
During sexual reproduction, the individual
receives genetic material from the mother via the egg, and from the father via a sperm
Inheriting any traits is a random process
. An offspring can inherit any possible combination of traits from its parents. This explains why an individual is different from their parents and even their siblings
The genetic trait that are passed down
can be desirable, undesirable or neutral
to the next generation. Therefore, certain disorders or diseases such as sickle cell anaemia, or cystic fibrosis can be passed down from parent to offspring.
How each Parts of Each Reproductive System Works Together
Puberty
Period when an adolescent becomes capable of reproducing and experiences rapid growth and development
Sex and growth hormones cause changes to other body systems such as the skeletal and muscular systems
Similarities between Boys and Girls
Height and Weight increases
Armpit hair growth
Pubic hair growth