1. Genetics and Heredity
EPISD Standards Based Curriculum

2. GENE – code for a specific trait
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EPISD Standards Based Curriculum

3. DNA - genetic material that carries information about the organism
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EPISD Standards Based Curriculum

4. CHROMOSOME – a threadlike cellular structure that carries genetic information
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EPISD Standards Based Curriculum

5. NUCLEUS – control center of the cell that direct’s the cells activities
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EPISD Standards Based Curriculum

6. CELL – the basic unit of structure and function in living things
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EPISD Standards Based Curriculum

7. The chromosomes contain tightly coiled strands of DNA
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There are 100 trillion cells inside the average human. Each nucleus contains 46 chromosomes or 23 pairs
The chromosomes contain tightly coiled strands of DNA
One chromosome in every pair comes from each parent
Genes are sections of DNA that contain the codes for building proteins.
EPISD Standards Based Curriculum

8. Sexual vs. Asexual Reproduction
TEKS 7.14 The student knows that reproduction is a characteristic of living organisms and that the instructions for traits are governed in the genetic material.
define heredity as the passage of genetic instructions from one generation to the next generation.
compare the results of uniform or diverse offspring from sexual or asexual reproduction. Supporting Standard
recognize that inherited traits from individuals are governed in the genetic material found in genes within chromosomes in the nucleus. Supporting Standard
EPISD Standards Based Curriculum

9. Sexual Reproduction vs Asexual Reproduction
EPISD Standards Based Curriculum

10. Sentence Stems One characteristic of asexual reproduction is…
One characteristic of sexual reproduction is…
One characteristic sexual and asexual reproduction have in common is…
EPISD Standards Based Curriculum

11. Advantages/Disadvantages
Sexual Reproduction
Asexual Reproduction
Advantages:
Disadvantages:
Advantages:
Disadvantages:
What does the student think the advantages and disadvantages are on both types of reproduction?
EPISD Standards Based Curriculum

12. Define Heredity
Look back at your definition of heredity from the Engage activity.
Do you still agree with that definition?
Or would you like to modify it?
EPISD Standards Based Curriculum

13. Where is the genetic material stored?
Think back on the models that you made during the Explore investigations.
Where was the genetic material found?
What happened when there were two different genes?
EPISD Standards Based Curriculum

14. Sexual Reproduction Sexual Reproduction Two parents
Sex cells: sperm and egg
Sperm and egg join= fertilization
Offspring look different from parent
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15. Asexual Reproduction Asexual Reproduction One parent No sex cells
Offspring produced by cell division
Offspring identical to parent (same DNA)
Several types in plants and animals
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16. Types of Asexual Reproduction
Binary Fission
Organism divides in half
Two identical daughter cells produced
Daughter cells are half the parent’s size
Daughter cells grow, then divide too
Ex: bacteria
EPISD Standards Based Curriculum

17. Types of Asexual Reproduction
Budding
Small bud grows out of parent cell
Two different sized cells made (with identical DNA)
Bud breaks off and grows
Ex: yeast and hydra
EPISD Standards Based Curriculum

18. Sexual vs. Asexual Reproduction
Type of Reproduction
Advantages
Disadvantages
Sexual
diversity of offspring
requires a mate to reproduce
offspring less like to have mutations show up
slower population growth
Asexual
does not require a mate for reproduction to take place
lack of diversity in offspring
can increase population rapidly
reproduce genetically identical to parents, the offspring inherit any mutations of the parents
EPISD Standards Based Curriculum

19. Video Clips taken from youtube.com:
Sexual Reproduction: Asexual Reproduction:
EPISD Standards Based Curriculum