1. Reproduction & Heredity

2. Stages of Reproduction
Fertilization~
Joining of an egg and
a sperm in the
fallopian tube
***VIDEO*** Click on picture
How Pregnancy Happens

3. Embryo:
A fertilized egg in the
first 2 months
Fetus:
From the 3rd month on the
embryo is called a fetus.

5. Stages of Birth: Labor – mild contractions pushes the
baby against the cervix
2. Birth – Baby pushes through the cervix
and into the birth canal.
3. After birth – After the baby is delivered,
the placenta separates and is delivered.

7. Identical Twins:
Twins developed
from the same
fertilized egg that
splits.

9. Fraternal Twins:
Twins that develop at
same time but from
separate fertilized eggs.

11. A natural birth of a baby..
Vaginal Birth:
A natural birth of a baby..
***video***
Click on image!

12. Breech Birth:
Feet or butt of a baby enters the
birth canal first.

13. Cesarean Section (C section)~
An incision is made in the abdomen
and uterus in order to deliver the baby.

14. Anemia~
Low number of healthy
red blood cells,
insufficient iron.
The baby takes iron to
make red blood cells.

15. Toxemia~
The body retains toxic waste,
can lead to weight gain
and swollen feet.
If left untreated can
lead to convulsions
and coma.

16. Gestational Diabetes~
Occasionally a pregnant woman may temporarily develop diabetes, usually near the end of her pregnancy, can cause the baby to be big.

17. Miscarriage~ Muscles in the uterus contract
and force a nonliving embryo from the body,
usually within the first 3 months.
Still Birth~
Occurs when a mother
delivers a non living
fetus after full term.

18. Incubator~ keeps a premature baby in a
sterile environment and at a warm
temperature until fully developed.
Premature Birth~
babies born before they are fully developed.

19. Birth Defects~
Physical or mental disabilities that are
present at birth.
Fetal Alcohol
Spectrum Disorders~
birth defects caused by
alcohol consumption
during pregnancy. This disability is 100% preventable!

20. Heredity: Chromosomes~ tiny threadlike structures that
carry hereditary information from
generation to generation.
Every cell contains
46 chromosomes,
23 from mother and
23 from father.

21. X Chromosomes =
Female (XX)
Y Chromosomes =
Male (XY)

22. Genes~ Chromosomes are divided into
smaller units which contain instructions to
help determine a certain
characteristic
of an individual.
DNA ~ makes up
the genes

23. Dominant Genes~ Person will show the trait
coded for by the gene even if only one
gene is present.
Recessive Genes~
Occurs only if a
Dominant gene
is not present.
(ex…rolling your tongue)

24. Prenatal Diagnosis: Amniocentesis~ test used by taking amniotic
fluid from the mother.
Ultrasound~
Sound waves used to
produce images
of the fetus.

25. What would be the
Reason for
prenatal testing?