Download Lesson 1

Unit 4:
Reproduction
Topics will include:
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passing on of traits
mitosis and meiosis
sexual and asexual reproduction
animal and plant reproduction
diseases
* this section will encompass Unit 2 in the textbook
Nov 30­10:14 AM
Why do Chuck Norris and his not so famous brother look somewhat alike?
Dec 1­7:38 AM
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Why do some dogs appear so similar?
Dec 1­7:40 AM
What's the deal with twins?
Dec 1­7:52 AM
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It's all about reproduction and genetics!!
Dec 1­7:53 AM
Genetic Information:
What are some similarities between children and parents?
Tongue Rolling
Attached/Detached earlobes
Why do they share these things??
Will you become like your parents??
Nov 30­10:19 AM
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Passing on Genetic Informtion
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genetics is the study of how traits from parents are passed on to offspring
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traits are features that vary in size or form from individual to individual within a species
Ex. height in humans is a trait
speed is a trait in cheetahs
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traits are often passed on from parent to offspring
Ex.
you have your mothers eyes
Nov 30­10:26 AM
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heredity is the process by which traits are passed on from an individual to an offspring
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traits are passed on through sexual or asexual reproduction
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sexual reproduction is common in animals
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asexual reproduction is common in bacteria
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the traits a person has are carried in their cells in a section called the nucleus
Nov 30­10:34 AM
4
Role of the Nucleus
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all cells contain organelles (parts) including cell membrane, cytoplasm mitochondria and the nucleus
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the nucleus is the control center of a cell (both plant and animal)
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it is also responsible for heredity
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the information in the nucleus tells your cells what to do in order to survive
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it also contains the information that makes you who you are
Ex.
when you grow, when your voice changes, when you lose your hair
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A nucleus is usually found near the center of a cell. It contains all your genetic material
Dec 1­7:32 AM
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Read the following:
Text, pages 112 ­ 114
Questions:
Page 112: #'s 1,2,3
Dec 1­7:35 AM
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