1. Mrs. Baxter and Mrs. Herndon 5th Life Science
DNA
Mrs. Baxter and Mrs. Herndon
5th Life Science

2. 1. Genetics is the study of genes, heredity, and genetic  variation in living organisms. 
of a four leaf clover

3. https://brain pop DNA/
2. DNA - carries the genetic information for a cell and is a set of instructions that tells the cell what to do or be.
3. Chromosome – a single long molecule of DNA (x shape).

4. 4. Gene – a part of the chromosome that contains DNA

5. Traits:
traits video/

6. Genetic traits

7. 5. Inherited trait – a characteristic passed from parents to their offspring. 6. Dominate trait – a strong trait that appears even if the organisms has only one factor Recessive trait – a trait that appears only if an organism has two factors. 8. Hidden trait – a trait that an organism carries, but is not expressed.

8. H t HH Ht tt Ht H - black t - spotted HH= dominant Ht = dominant
tt = recessive H t HH Ht tt Ht

9. DNA (Deoxyribonucleic Acid)
DNA BrainPop
Is the chemical code that gives you your inherited traits like hair color, eye color, height, handedness and tongue rolling

10. Famous DNA Scientists Rosalind Franklin: an English scientist who made the first x-ray images of DNA
DNA X-ray

11. Maurice Wilkins gives Franklin’s x-rays to Watson and Crick
discovery/history 1950’s -1960’s
Maurice Wilkins gives Franklin’s x-rays to Watson and Crick
Francis Crick and James Watson make a model of DNA
Maurice Wilkins

12. Franklin dies of cancer
Watson and Crick
Franklin dies of cancer
Wilkins, Watson, and Crick share a Nobel Prize for the DNA model

13. 9. Genetic mutations: occur when there are changes in a cell’s DNA.
Albinism – loss of pigmentation in the skin, hair, and eyes

14. https://brainpop genetic mutations/

15. Obj. What is an Adaptation?
10. Adaptations: inherited traits that help living things meet basic needs and survive in their environments
11. migration: an inherited trait that causes some animals to move to different places in order to survive.
12. extinction: the death of all organisms of a species. BrainPop
Page in science textbook

16. 2. Behavioral 3. Life processes 3 Types of Adaptations:
1. Physical
2. Behavioral
3. Life processes
Study Jams – Animal Adaptations

17. StudyJams video

18. What Other Factors Affect Characteristics?
Pages in textbook

19. Vocabulary: instinct: a behavior that an organism inherits
Learned behavior: a behavior that an animal acquires through experiences
Environment: all the living and nonliving things that surround and affect an organism

20. Instincts Brainpop In your journal, answer the question:
What effect do instincts have on an animal’s survival?
Page

21. What are Learned Behaviors?
Answer in your journal:
How are most animal behaviors learned?
Page

23. Environmental Influences
Page 176
All living things have needs: food, water, space, and shelter.
* Changes in the environment force animals to change their behavior.
* Sometimes, the environment causes a physical change in a species over time.