Download Biology – Wilson Name: Meiosis: DNA – NOVA: Life`s Greatest

Biology – Wilson
Meiosis: DNA – NOVA: Life’s Greatest Miracle
Name: _________________________________
Pd.______
Date:___________________
1. DNA which makes up our chromosomes) is “very good” at
2. The DNA of a bacterium is ___________________________ to its parent’s.
3. What risk is there for a species that only reproduces by cloning?
4. How does the DNA of sexually produced offspring compare to the DNA of the parents?
5. What process is used to make sperm cells and egg cells?
6. How many chromosomes are there in a normal human body cell?
7. How many chromosomes are there in a human gamete (sperm or egg) cell?
8. What happens to the genes when two chromosomes “embrace”(cross over)?
9. When does a human female produce her eggs?
10. What is an egg missing that it needs to survive?
11. What dangers confront sperm in the vagina?
12. True or false: All cells have the same genes.
13. What does a gene do when it has been “turned on”?
14. How is the Y chromosome different from the X chromosome?
15. Where specifically does the baby get its nutrients from?
16. Do the baby’s and mother’s blood ever mix?
17. Why is birth more dangerous for humans than for other animals?
_______________________________________________________________________________________________
Biology – Wilson
Meiosis: DNA – NOVA: Life’s Greatest Miracle
Name: _________________________________
Pd.______
Date:___________________
1. DNA which makes up our chromosomes) is “very good” at
2. The DNA of a bacterium is ___________________________ to its parent’s.
3. What risk is there for a species that only reproduces by cloning?
4. How does the DNA of sexually produced offspring compare to the DNA of the parents?
5. What process is used to make sperm cells and egg cells?
6. How many chromosomes are there in a normal human body cell?
7. How many chromosomes are there in a human gamete (sperm or egg) cell?
8. What happens to the genes when two chromosomes “embrace”(cross over)?
9. When does a human female produce her eggs?
10. What is an egg missing that it needs to survive?
11. What dangers confront sperm in the vagina?
12. True or false: All cells have the same genes.
13. What does a gene do when it has been “turned on”?
14. How is the Y chromosome different from the X chromosome?
15. Where specifically does the baby get its nutrients from?
16. Do the baby’s and mother’s blood ever mix?
17. Why is birth more dangerous for humans than for other animals?