3.19b F1 x F1 Cross

3.19a P1 x P1 Cross

3.18b Genotypes

3.18a Phenotypes

3.2

• Oestrogen and progesterone are both examples of hormones.
• Hormones is produce in a structure of endocrine gland, hormones will travel through the blood to it target which is tissues. Target tissues hormones will effect.
• The ovary produces oestrogen which has effect of the thickness and effect number 2. is the effect to the brain which causes the ovary to release an egg.
• Produces progesterone.
• The end of the cycle is called the menstrual period.

3.9

3.12 Amniotic Fluid

• Amniotic fluid is found inside the embryo.
• If anything happens to the outside uterus amniotic fluid prevent anything happening to the unborn child.
• Amniotic fluid can't be compressed, it absorbs pressure. 

3.11 placenta

• The placenta grows out of the developing embryo not the mother. 
• The blood vessels inside the placenta are the child's blood vessels including arteries and veins.
• The placenta grows into the wall of the uterus. 
• Glucose, amino acids and fats travels through the mother's blood stream and into the wall of the uterus. 
• Glucose, amino acids and fats will cross into the child's blood at the placenta.
• Amino acids, sugars and fats will go from the mother's to the child's blood.