Genes and You: Information Sheet 1
Chromosomes and You
SKIN CELLS
Nucleus containing 46 chromosomes
MUSCLE CELLS
Nucleus containing 46 chromosomes
Sperm are made in the man’s testes
Eggs are made in the woman's ovaries
AN EGG CELL |
A SPERM CELL |
|
|
Nucleus containing 23 chromosomes |
Nucleus containing 23 chromosomes |
SO...when fertilisation takes place
…..An egg cell containing 23 chromosomes joins with a sperm cell containing 23 chromosomes to make a zygote or fertilised egg cell containing 46 chromosomes and…
…this is the beginning of a unique individual