1. 7th Grade Science
DO NOW
Oct 11, 2016
Date:
10/11
DO NOW:
How is it possible that a blonde child can be born to parents who both have brown hair?

2. ESSENTIAL QUESTION:
What creates diversity among offspring?
OBJECTIVES:
-Video on advantages of Asexual Reproduction
-Investigation: Dresophila Fly Fornication

3. Video: Advantages of Asexual Reproduction (watching only up to 2min 30sec.)

4. AA, rr, BB AA, rr, Bb Aa, rr, BB Aa, rr, Bb Vocabulary Review
Phenotype:
Curly wings,
white eyes,
tan body.
Possible Genotype:
AA, rr, BB
AA, rr, Bb
Aa, rr, BB
Aa, rr, Bb
Dominant
Recessive
Wings
A = curly
a=straight
Eye Color
R = red
r = white
Body Color
B = tan
b = yellow
How is this genotype different than the others?

5. Allele: a version of one gene Example: curly wing allele = A
VOCABULARY REVIEW
Allele: a version of one gene
Example: curly wing allele = A
Example: straight wing allele = a
Homozygous: having identical alleles or versions of a gene for a trait
Example: Homozygous Dominant (AA)
Example: Homozygous Recessive (aa)
Heterozygous: having different alleles or versions of a gene for a trait
Example: Heterozygous (Aa)
“Homo” = Same
“Hetero” = Different

6. Read introduction and answer the pre-lab questions.
Investigation
Tape the investigation handouts into your composition book. Make your notebook look like this picture.
Read introduction and answer the pre-lab questions.
Tape here only

7. Investigation: Sexual Reproduction
1. Each pair will get a nucleus (paper cup) with 4 allele pairs (red/yellow coins).
2. Shake up the cups and dump them out on the table (make sure the male and female alleles don’t get mixed up!)
3. Record the genotype and phenotype on your handout.
4. Repeat until you have data for 4 offspring.
5. Color your fruit fly drawings to match the offspring you created.
Male
Nucleus
Alleles R r
Female
Nucleus
Offspring
Nucleus R R a a

8. Investigation: Asexual Reproduction
1. Close your eyes and select both chromosomes from the ONLY the female’s nucleus.
2. Record the genotype and phenotype on your handout.
3. Repeat until you have data for 2 offspring.
4. Color your fruit fly pictures to match your offspring. r r
Female
Nucleus r r

9. Asexual vs. Sexual Reproduction
Draw a line between groups of offspring. Label the first 4 offspring that had TWO PARENTS as SEXUAL REPRODUCTION: DIVERSE Label the offspring with ONE PARENT as ASEXUAL REPRODUCTION: UNIFORM

10. Asexual vs. Sexual Reproduction
Sexual Reproduction: DIVERSE
Asexual Reproduction: UNIFORM

11. Investigation: Conclusion
Answer the questions below using complete sentences.
Compare the offspring made by sexual reproduction and asexual reproduction.
Explain why the offspring made by sexual reproduction differ from asexual reproduction.
Imagine a virus infects both populations of offspring and kills only red eyed flies. Which population of offspring is most likely to survive: the population of sexually or asexually reproducing flies? Explain your answer.
Conclusion Questions

12. Exit Ticket
How are the offspring of sexual reproduction different from the offspring of asexual reproduction?

13. DO NOW
Oct 20
Date:
10/12 &
10/13 Q: A:
DO NOW:
What are some of the different phenotypes in your family? 
Are there any members in your family that look different than all the others? 
Explain why you think that is.

14. ESSENTIAL QUESTION:
What creates diversity among offspring?
OBJECTIVES:
-Punnett square practice
-Two-column notes on types of reproduction
-Compare the types of reproduction in a mind map

15. Video
Asexual Reproduction

16. NOTES: Sexual and Asexual Reproduction
Expectations: -Level 1 Voice -DO NOT visit any other websites during your note taking. -Stay on task

17. TWO COLUMN NOTES Main Idea or Vocabulary on the left
Details and definitions on the right

18. Heredity is the passing of traits from parent to offspring.
Heredity is responsible for how you have your mother’s eyes and your father’s smile. Along with this inherited similarity though, there is also variation, as we are not exact clones of our mothers and fathers.

19. Offspring are the new organisms produced by one or more parents
Offspring are the new organisms produced by one or more parents. (children, babies, young)

20. The study
of heredity
in biology
is called
genetics.

21. The Father of Genetics Gregor Mendel was an Austrian
monk who studied mathematics
and science but became a
gardener in a monastery.

22. The Father of Genetics
Mendel thought there was a connection between the flower color of a pea plant and the type of seed the plant produced.
He began to experiment with garden peas in 1856.
Mendel made careful use of experimental design to study pea plants and had the first recorded study of how traits pass from one generation to the next.

24. Reproduction
Reproduction - biological process by which new "offspring" (individual organisms) are produced from their "parents".
*It is the process by which an organism produces others of its same kind.

25. Turn to your partner and discuss the following questions:
Do all organisms reproduce?
Do all organisms reproduce in the same way?

26. Types of Reproduction Asexual - one parent Sexual - two parents
Offspring are UNIFORM
Sexual - two parents
Offspring are DIVERSE

27. Asexual Reproduction:
a type of reproduction in which a new organism is produced from one parent and has the same DNA or genetic material as the parent.
Spider plant offspring
Yeast cells dividing (budding)

28. Asexual Reproduction Requires only one parent
Offspring have 100% the same chromosomes as the parent.
In other words, the offspring are exact “clones” of the parent.
Mitosis
Movie

29. Asexual Reproduction Advantages:
Animals that remain in one place and are unable to look for mates would need to reproduce asexually.
Numerous offspring can be produced without "costing" the parent a great amount of energy or time. This type of reproduction is also faster.
Environments that are stable and experience very little change are the best places for organisms that reproduce asexually.
Disadvantages:
Lack of genetic variation - all of the organisms are genetically identical and therefore share the same weaknesses.
If the stable environment changes, the consequences could be deadly to all of the individuals.
*Animals are not the only organisms that reproduce asexually Yeasts, plants, and bacteria are capable of asexual reproduction as well.

30. Asexual Reproduction
Gremlins Clip

31. Turn to your partner and discuss 1 new fact that you just learned about asexual reproduction.

32. Sexual reproduction:
a type of reproduction in which two cells, usually an egg and a sperm, join to form a new organism with its own genetic identity.
Plant
Animal

33. Sexual Reproduction Advantage:
Allows genetic variation or diversity within a species which assists with the species survival
Disadvantages:
Requires 2 parents
Reproduction is slower

34. Sexual Reproduction Most of the members of the Animal Kingdom Fish
Mammals
Amphibians
Birds
Reptiles
Insects
Crustaceans

35. Sexual Reproduction Examples of organisms that reproduce sexually
Chickens
Iguanas
Lobsters
Sharks
Humans
Butterflies
Sunflowers
Roses

36. Sexual Reproduction Happens 2 ways Internally (inside)
The egg is fertilized by sperm inside the female
Mammals, birds, reptiles, insects, spiders
Externally (outside)
The egg is fertilized by sperm outside the female
The female lays the eggs and then the male fertilizes them.
Fish and some amphibians
Plants and fungi (pollen and spores)

37. Asexual Reproduction Examples

38. Asexual Reproduction Examples of organisms that reproduce asexually
Hydra
Sea Star
Strawberry
Eubacteria
Euglena
Paramecium
Yeast

39. Types of Asexual Reproduction
Fragmentation
Fragmentation is where a single parent breaks into parts that regenerate into whole new individuals Ex. Planaria

40. Types of Asexual Reproduction
Vegetative Propagation (Plant cuttings)
Vegetative reproduction is a type of asexual reproduction in plants where new parts grow from parts of the parent plant. It has long been used in horticulture and agriculture.
Ex. Spider Plant

41. Types of Asexual Reproduction
Binary Fission
Bacteria
Protists
Binary fission is a form of asexual reproduction where every organelle is copied and the organism divides in two.

42. Types of Asexual Reproduction
Budding
Movie
Budding is where a new individual develops from an outgrowth of a parent, splits off, and lives independently.

43. Types of Asexual Reproduction
Regeneration
Regeneration occurs when a body part has broken off and the organism grows a new one. Ex. Lizard Tail
*The ability to restore lost or damaged tissues, organs or limbs

44. A whole new starfish can grow from a single arm that was cut off a starfish organism.
A planarian is a tiny flatworm that lives in ponds. If a planarian is cut into pieces, each piece will grow into a new planarian.
Yeast are one-celled organisms that produce offspring from a bulge that forms and breaks away from the parent.

45. Exit Ticket
Which offspring, sexual or asexual, are likely to have genetic variation? Which offspring will be identical?

46. DO NOW What is the difference between sexual and asexual reproduction?
Date:
10/14
What is the difference between sexual and asexual reproduction?
Use complete sentences.

47. ESSENTIAL QUESTION:
How are traits passed from parents to offspring (children)?
OBJECTIVES:
-DNA extraction lab
-Review Vocabulary for Heredity.
-Play Science BINGO using vocabulary

48. SCIENCE BINGO!
Fill in all of the empty spaces with one word from the back of your card. Words can be used twice, but not in the same row or column.
genes
alleles
phenotype
phenotype
As you hear the definition of a word, check it off your paper.
Any full horizontal, vertical, or diagonal line results in Bingo!

49. Independent Practice
Sponge Bob Genetics Sheet

50. DO NOW
Oct 23, 2015
7th grade Science
Date:
10/17
Q: Sexual Reproduction creates diversity in offspring?
DO NOW:
Describe the main difference between sexual and asexual reproduction in your own words. 
Use complete sentences.

51. Quiz
Level ZERO Voice