Inherited traits
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This document discusses inherited traits and how characteristics are passed down from parents to offspring. It defines inherited traits as those physically transmitted from parents to children, such as eye color, hair color, and dimples. Instincts are also inherited traits that are innate behaviors not learned, like a lion's instinct to hunt. The document provides several examples of inherited traits in humans, animals and plants to illustrate how genetic material carried in DNA is transmitted between generations as a blueprint that determines traits.
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Inherited traits
This document discusses inherited traits and how they are passed down from parents to offspring. Some key points:
- Heredity is the passing of traits from parent to offspring through DNA. Traits like eye color, hair color, and skin color are examples of inherited traits in humans and animals.
- Chromosomes contain DNA and are found in the nucleus of cells. DNA acts as a blueprint containing the genetic code that determines traits.
- When organisms reproduce, their DNA is passed to offspring. Offspring then express the traits encoded in the DNA.
- Inherited traits include physical traits like eye and hair color as well as behaviors called instincts, such as a lion's instinct to hunt or a bird
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Inherited traits
This document discusses inherited traits and behaviors in living things. It notes that traits are physical characteristics while behaviors are how something acts in response to its environment. Traits can be inherited from parents, with organisms getting half their traits from each parent. Both physical traits and behaviors can be inherited. Examples of inherited physical traits in humans include eye color, hair color, ear lobe shape, and height. Instincts are inherited behaviors that help animals survive without being taught, such as animals preparing for and surviving winter or birds instinctively protecting their eggs and young.
Inherited traits
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Inherited traits
This document discusses inherited traits and how they are passed down from parents to offspring. Some key points:
- Heredity is the passing of traits from parent to offspring through DNA. Traits like eye color, hair color, and skin color are examples of inherited traits in humans and animals.
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Chapter-1
Introduction to objective, scope and outcome the subject
Chapter 2
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Chapter 3
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Chapter 6
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Inherited traits
- 2. Essential Questions • How are characteristics passed from parent to offspring? • What are some of the traits passed from parent to offspring? • What is an inherited trait? • What is an instinct?
- 3. Do you see any ways that these children are similar to their parents or brothers and sisters?
- 4. •Look around. Is anyone just like you? You and everyone else are unique. No two people are exactly alike, including identical twins. •People in a family may have things in common. They can share traits. •A TRAIT is simply a characteristic that one possesses – Ex. freckles, green eyes, etc. Inherited Traits
- 5. What is Heredity? • Heredity is the passing of traits from parent to offspring. This includes your gender.
- 6. • A packet of coiled up DNA • Humans have 23 pairs of chromosomes • There are 23 pairs of chromosomes found in the nucleus of any one of your cells What are Chromosomes?
- 7. How are Traits Passed? • When organisms reproduce, traits are passed from parent to offspring. • These traits are carried in DNA, the genetic material found in a cell’s ________ • DNA acts like a blueprint. Nucleus
- 8. Inherited Traits • INHERITED TRAITS are those traits that are passed down from parents to their offspring. – EX. In humans- eye color, hair color, skin color, freckles, dimples, etc. are all examples of inherited traits – EX. In animals- eye color, fur color and texture, facial shape, etc. are examples of inherited traits.
- 9. Inherited Traits- BIG IDEA! •Inherited traits are passed down from your parents! – Have you ever heard someone say “you look like your father” or “you have your mother’s eyes?” – Some inherited traits are not so easily seen- they affect structures inside your body.
- 10. Examples of inherited traits • This family has an inherited trait. Can you tell what it is? They have brown hair.
- 11. Examples of inherited traits • Some people have a genetic trait that creates indentations on their cheeks called dimples.
- 12. Inherited Traits in Plants •Plants also pass on traits to their offspring. This could include: flower color, shape, leaf shape, and plant height.
- 13. What are some inherited traits? • What are some inherited traits in animals? – A tiger has stripes. – A giraffe has a long neck. – An elephant has a trunk. – A snake has no legs.
- 14. Examples of inherited traits •Look at the elephants. What traits do they have in common?
- 15. Instincts – Inherited traits include instincts. – An INSTINCT is a behavior that has been passed on from the parents that is ready to use without learning and that does not require practice •Ex. A lion’s instinct to catch prey •Ex. Sea turtles laying eggs on the beach •Ex. Bird migration •Ex. Making a nest- birds just KNOW how to build a nest correctly time after time
- 16. Let’s Review • Which is not an inherited behavior? – A. dimples – B. reading – C. freckles – D. brown eyes
- 17. Let’s Review • What are inherited behaviors called? – A. old behaviors – B. recessive traits – C. environments – D. instincts
- 18. Let’s Review • How is hunting both learned and instinctive in animals? – A. Animals learn to hunt. – B. Animals have the instinct to hunt. – C. Animals have the instinct to hunt but must learn hunting skills. – D. Animals have the instinct to teach their young how to hunt.
- 19. Let’s Review • What kind of behaviors do organisms inherit from their parents? • A. acquired traits • B. learned behaviors • C. instincts • D. eye color
- 20. Let’s Review • Plants make their own food through photosynthesis. Photosynthesis in plants is an example of _______. • A. an inherited trait • B. a learned behavior • C. an acquired trait • D. a life cycle
- 21. Your assignment: Write a paragraph about at least three traits you share with your parents, brothers or sisters.