1. https://www.youtube.com/watch?v=ic tZJln3Vj4
Embryology
tZJln3Vj4

2. Embryology is the study of how organisms develop from a fertilized egg
Embryology is the study of how organisms develop from a fertilized egg. An embryo is an animal or plant in its earliest stages of development..

3. As the organism develops, different genes in different cells may be read. The ultimate fate of any one cell--whether it becomes a skin cell, a nerve cell, a kidney cell, or a bone cell--depends upon which genes are read. If any of the genes are missing, if they are misread, read out of sequence, or altered in any way, the cell or organism may dramatically change.

4. The timing of this process depends on the embryo's stage of development and the location of the cell. Developing eye cells, for instance, use different combinations of genes than do brain cells or skin cells. The embryos here are all in the same stage of development. Their physical similarities and differences correspond to variations in their genes.

5. Embryological Development

6. Comparative Embryology
The embryos of some species are even difficult to tell apart because certain developmental stages resemble other species. Many of these animals do not differ much in appearance until they develop further. Some unexpected traits can appear in animal embryos. For example, human embryos have gill slits just like fish! In fish they develop into gills, but in humans they disappear before birth. The presence of the gill slits suggests that a long time ago humans and fish shared a common ancestor

7. Genetic Similarities
There are more similarities in the DNA code between closely related organisms compared to organisms that are not closely related.

8. Common Ancestor
Even though two different species may not look similar, they may have similar internal structures that suggest they have a common ancestor. Common ancestor: Organism from which two or more different organisms evolved a long time ago. Common ancestry can also be determined by looking at the structure of the organism as it first develops.

9. Structural Evidence
Vestigial structure is a structure that has lost its use through evolution. Example: Penguins also do not use their wings to fly in the air. However, they do use them to move in the water.

10. Structural Evidence Continued
Homologous structures are body structures that are similar in origin (part of the body) and function (what they do). Humans, whales, dogs, and bats have similar forelimbs. This shows that they share a common ancestor.

11. What about Fossils?
The fossil record provides snapshots of the past that, when assembled, create a picture of evolutionary change over the past four billion years. Fossil evidence clearly shows that life is old and has changed over time.

12. Evidence for Evolution Foldable
Homologous Structures
Vestigial Structures
Fossil record
Genetic Similarities
Embryology Similarities
Shared structures in different species
Structures that are found in a species but have lost their function.
Fossils in deeper layers are very different from organisms that live today, this suggests that organisms have changed over time.
There are more similarities in the DNA between closely related organisms compared to organisms that are not closely related.
Embryos of different organisms look very similar More important many embryos have characteristics of other organisms but lose them during development (ex. Human embryos have a tail and gill slits but lose them during embryotic development)

13. Thoughts to Ponder… Does the fossil record really support evolution?
Creationists know that it actually supports biblical creation! In fact, the fossil record is a rock-solid testament in stone that billions of creatures all over the world drowned in the rising waters of the worldwide flood of Noah's time. And apparently, Charles Darwin himself realized he was unable to use the fossil record to support his theory.
On his Evolution: The Grand Experiment DVD, creationist Dr. Carl Werner interviewed Dr. Andrew Knoll, professor of biology at Harvard University. Here's what Dr. Knoll said about Darwin and the fossil record:
"Darwin devotes two chapters of The Origin [of Species] to the fossil record. And you might think that's because Darwin, like most of his intellectual descendants, would have seen the fossil record as the confirmation of his theory…. But, in fact, when you read The Origin [of Species], it turns out that Darwin's two chapters are a carefully worded apology in which he argues that natural selection is correct despite the fact that the fossils don't particularly support it."
While Darwin's intellectual descendants think that the fossil record is their friend, in reality, it is one of the most important evidences for biblical creation!

14. Continuing thoughts
"Darwin devotes two chapters of The Origin [of Species] to the fossil record. And you might think that's because Darwin, like most of his intellectual descendants, would have seen the fossil record as the confirmation of his theory…. But, in fact, when you read The Origin [of Species], it turns out that Darwin's two chapters are a carefully worded apology in which he argues that natural selection is correct despite the fact that the fossils don't particularly support it."
While Darwin's intellectual descendants think that the fossil record is their friend, in reality, it is one of the most important evidences for biblical creation!
Find more information at…
evolution

15. Baby Development
Where does it begin?

16. In the beginning…
Remember! Human reproductive cells go through the process of Meiosis. A fertilized egg is called a zygote. This is considered a diploid cell because it has the amount of chromosomes needed from each parent to began fetal development.

17. In the beginning… continued
*What is an embryo?
What is a fetus?
Is a developing baby through the second month of growth after conception.
The rapidly dividing mass of cells inside the women’s uterus.
Is a developing baby from the ninth week after conception until birth.
It’s the name given to the embryo from the third month on.

18. First trimester (Months 1-3)
1 Month (4 Weeks)
5 Weeks
Umbilical cord, tail and gill grooves form
At the end of the first month, the embryo has a heartbeat, a two-lobed brain, and a spinal cord
The embryo is about 7mm long
The heart and other organs begin to develop.
Arms and legs begin to bud.

19. Two Months (8 weeks) The heart is fully formed
By the end of the second month, the embryo is recognizable as a human and is called a fetus.
The heart is fully formed
Bones are beginning to harden
Nearly all muscles have appeared in the body

20. After Two Months
The fetus has started to form arms and legs as well as fingers, ears, and toes. By the end of the first trimester, the heart has four chambers. The fetus can be visibly identifies as a male or female.

21. Second Trimester (Months 4-6)
4 months (16 weeks)
6 months (20 weeks)
By the end of the fourth month fingernails, toenails, eyebrows, and eyelashes have developed. Teeth begin to form, lips appear, and head hair may begin to grow. The fetus can bend its arms and make a fist. The mother can feel the baby start to move!
By the end of the sixth month vernix (keeps body from dehydrating and skin from getting wrinkled) appear on baby.

22. Third trimester (Months 7-9)
7 months (28 weeks)
8 months (32 weeks)
By the seventh month lanugo (fine hair grown to insulate the fetus) appears on the baby. Footprints and fingerprints have formed
By the eighth months fetus growth slows down and moves into a head-down position.
9 months (36 weeks)
By the ninth month the fetus is full term. Skin is smooth and waxy looking. The eyes are usually gray. Languo drops off.

23. Full Term 9-10 months (36-40weeks)
A baby is fully developed and ready to be born.

25. Create a foldable First Trimester Second Trimester Third Trimester
________ months _________months _______months
Describe what Describe what Describe what
Is developing Is developing Is developing

26. Fetal Alcohol Syndrome Demonstration
demonstration.html