2. THE GENES
Each cell in the
human body
contains about
25,000 to 35,000
genes. Genes carry
information that
determines your
traits.
3. THE GENES
Traits are the
characteristics you
inherit from your
parents.For
example, if both of
your parents have
green eyes, you
might inherit the trait
of green eyes from
them.
4. THE GENES
Genes are kept on
chromosomes.
Chromosomes come in
pairs, and there can be
thousands of genes in
one chromosome.
Chromosomes (and
genes) are made of
DNA.
5. THE GENES
Chromosomes are
inside the nucleus of
cells.
The nucleus
contains all the
information about the
cell that it governs.
The chromosomes
are the information.
6. THE GENES
In human cells, the
nucleus contains 46
chromosomes: 23 from
each parent. These
chromosomes contain
the information about
how we are.
For example:
chromosomes X and Y
decide the sex.
