SEXUAL vs. ASEXUAL REPRoduction
Part 1:
Video: Asexual vs. Sexual Reproduction (Stop at 7:15, when the practice questions start)
Answer these questions in complete sentences on your own paper:
1. What is the purpose of reproduction?
Sexual Reproduction
2. During sexual reproduction, what percent of DNA is found in each of the sex cells?
3. What is fertilization? Where does it take place?
4. After fertilization, what process does the one fertilized cell go through to create more cells?
5. How does the single cell become so many different types of cells?
6. Where does the DNA come from that an offspring have?
Asexual Reproduction
7. What is special about the offspring from asexual reproduction?
8. What are four different types of asexual reproduction?
Cell Division (Mitosis)
Copy and complete the table below in your own words, using the video to help you:
Video: Asexual vs. Sexual Reproduction (Stop at 7:15, when the practice questions start)
Answer these questions in complete sentences on your own paper:
1. What is the purpose of reproduction?
Sexual Reproduction
2. During sexual reproduction, what percent of DNA is found in each of the sex cells?
3. What is fertilization? Where does it take place?
4. After fertilization, what process does the one fertilized cell go through to create more cells?
5. How does the single cell become so many different types of cells?
6. Where does the DNA come from that an offspring have?
Asexual Reproduction
7. What is special about the offspring from asexual reproduction?
8. What are four different types of asexual reproduction?
Cell Division (Mitosis)
Copy and complete the table below in your own words, using the video to help you:
FYI - TWINS:
Identical twins form when one sperm fertilizes one egg, which then splits in two (like with mitosis). This creates two cells which are genetically identical and creates identical twins. Fraternal twins form when separate sperm fertilize separate eggs. This creates two embryos which are not identical, but share about half their DNA in common, just like any other siblings. More information about Twins. |
Part 2:
Go to this PBS website: Reproduction: One Goal, Two Methods
Log in as "ewmsSmartSphinx" as your username, and with your favorite color as "green".
Click on “Launch” on the picture of elephants.
Read each screen and stop where indicated (for movies, etc.).
You may also click on highlighted words to get definitions.
Screen 1: read
Screen 2: read and answer
What are the two methods of reproduction?
Screen 3: read the vocabulary words and their definitions.
Screen 4: read and answer
How many parents are there in asexual reproduction?
Why might it be beneficial (good) for an organism to have exact copies of itself? (Your opinion)
Screen 5: read and answer
How does an amoeba reproduce? (Describe it; don’t just say “asexually”)
WATCH VIDEO 1: Asexual Reproducers
What do we call an offspring that is an exact copy of its parent?
Screen 6: read and answer
What are 2 traits that parents pass on to their offspring in humans?
What is one trait that could affect an organism’s ability to survive?
Screen 7: read and answer
WATCH VIDEO 2: Why Sexual Reproduction?
Why does the black spot disease spread more easily to the asexual reproducers?
Screen 8: read page and read article (link on screen)
Describe in your own words what natural selection means.
Why is sexual reproduction considered a “biological tradeoff”?
Do most species reproduce sexually or asexually?
SKIP SCREENS 9 and 10, BUT COMPLETE THE FOLLOWING ACTIVITY:
Sexual vs. Asexual Reproduction: Place each description from the list below on the correct side of the chart.
Go to this PBS website: Reproduction: One Goal, Two Methods
Log in as "ewmsSmartSphinx" as your username, and with your favorite color as "green".
Click on “Launch” on the picture of elephants.
Read each screen and stop where indicated (for movies, etc.).
You may also click on highlighted words to get definitions.
Screen 1: read
Screen 2: read and answer
What are the two methods of reproduction?
Screen 3: read the vocabulary words and their definitions.
Screen 4: read and answer
How many parents are there in asexual reproduction?
Why might it be beneficial (good) for an organism to have exact copies of itself? (Your opinion)
Screen 5: read and answer
How does an amoeba reproduce? (Describe it; don’t just say “asexually”)
WATCH VIDEO 1: Asexual Reproducers
What do we call an offspring that is an exact copy of its parent?
Screen 6: read and answer
What are 2 traits that parents pass on to their offspring in humans?
What is one trait that could affect an organism’s ability to survive?
Screen 7: read and answer
WATCH VIDEO 2: Why Sexual Reproduction?
Why does the black spot disease spread more easily to the asexual reproducers?
Screen 8: read page and read article (link on screen)
Describe in your own words what natural selection means.
Why is sexual reproduction considered a “biological tradeoff”?
Do most species reproduce sexually or asexually?
SKIP SCREENS 9 and 10, BUT COMPLETE THE FOLLOWING ACTIVITY:
Sexual vs. Asexual Reproduction: Place each description from the list below on the correct side of the chart.
1) Offspring has 2 parents
2) Genes passed from generation to generation are diluted or weakened 3) Offspring has 1 parent 4) Each generation is the same as the one before 5) Genes passed from generation to generation are not diluted or weakened 6) Strength in variety of offspring 7) Each generation is different than the one before 8) Species may be better able to avoid catching a disease 9) Strength in numbers of offspring 10) Species may be less able to avoid catching a disease |