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Reproduction & Heredity

Reproduction & Heredity. Stages of Reproduction. Fertilization~. Joining of an egg and a sperm in the fallopian tube. Embryo: A fertilized egg in the first 2 months. Fetus: From the 3 rd month on the embryo is called a fetus. Stages of Birth:.

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Reproduction & Heredity

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  1. Reproduction & Heredity

  2. Stages of Reproduction Fertilization~ Joining of an egg and a sperm in the fallopian tube

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

  4. 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.

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

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

  7. Vaginal Birth: A natural birth of a baby..

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

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

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

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

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

  13. 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.

  14. 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.

  15. 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!

  16. 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.

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

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

  19. 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)

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

  21. What would be the Reason for prenatal testing?

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