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How do cells grow and divide?
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How is genetic material passed from parent to offspring?
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What are the patterns of inheritance and how can this be used to predict traits in offspring?
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What are the different variations in traits? How are these variations inherited?
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What happens when something goes wrong with regards to genetic traits?
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How can the rate of genetic traits inherited be calculated?
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What is DNA and what role does it have in our body?
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What are some current trends in DNA research?

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Required Readings:
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3.19
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Learning Objectives:
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To understand why it is necessary to copy genetic material accurately
To know that copying division is called mitosis, and results in cells with an identical number and type of chromosomes as their parent cells
To know how chromosomes behave during mitosis
To know where mitosis takes place in the bodies of mammals and flowering plants
To understand the need for a special cell division in the formation of haploid gametes

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Create a KWL table for genetics and heredity
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Know
Want to know
Learned
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Fill in the “K” and “W” columns
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You will fill in the “L” column at the end of each lesson, and can write any more questions that you may have from the current lesson
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Time: 15 minutes

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Watch the video on mitosis
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Write down questions you have while you are watching it
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Time: 25 minutes

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Create a model using the pipe cleaners and yarn to show what happens in the cell cycle
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Include the image as well as a written description for the following phases:
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Interphase
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Prophase
Metaphase
Anaphase
Telophase
Cytokinesis
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Time: 40 minutes

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Interphase
-
-
-
-
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Cell growth
Synthesis of DNA
Replication of organelles
Prepares for mitosis
Cell spends most of its time in interphase

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Prophase
-
-
-
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Chromosomes condense into 2 identical chromatids, joined at the centromere
Nuclear envelope begins to break down
Spindles form at the centrioles
Centrioles move to opposite ends of the cell

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Metaphase
-
-
Spindles attach to the centromere of the chromosomes
Chromosomes line up at the middle of the cell

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Anaphase
- Individual chromosomes are pulled apart and taken to opposite ends of the cell

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Telophase
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Nuclear envelope begins to form around chromosomes at opposite ends of the cell
Cell elongates and prepares for cytokinesis

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Cytokinesis
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Cell pinches off in the middle to form 2 new identical daughter cells
Literally means “splitting cytoplasm”

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Complete the “L” column of your KWL table, as well as any other questions you may have in the “W” column
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Next lesson we will look at meiosis and comparing mitosis with meiosis. Be sure to read over section 3.19 again

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
Required Readings:
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3.19
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Learning Objectives:
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



To understand why it is necessary to copy genetic material accurately
To know that copying division is called mitosis, and results in cells with an identical number and type of chromosomes as their parent cells
To know how chromosomes behave during mitosis
To know where mitosis takes place in the bodies of mammals and flowering plants
To understand the need for a special cell division in the formation of haploid gametes

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What are the stages in mitosis and what happens in each stage?
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When/why does mitosis occur?
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What is the purpose of meiosis?
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What are the products of meiosis?
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Where do mitosis and meiosis occur?
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Time: 15 minutes

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
Create a diagram depicting what happens during meiosis
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Include a written explanation of what is happening
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Time: 30 minutes

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Look at the picture on the following slide that compares mitosis and meiosis
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What are some similarities between the two processes?
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What are some differences?
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Time: 10 minutes

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Complete the “L” column of your KWL table, as well as any other questions you may have in the “W” column
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Complete your meiosis diagram if not completed

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Required reading:
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Supplemental text from wiki
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Learning Objectives:
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To learn about Mendel’s experiments with garden pea plants
To understand the Law of Independent Assortment and the Law of
Segregation
To predict the probability of genetic crosses using Punnett squares

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Take a look at the data that was collected from Mendel’s experiments.
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What can you conclude with regards to the following:
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The ratio of traits in the offspring
What trait is dominant? Recessive? How do you know?
What different traits were studied?
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Time: 15 minutes

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
Create a vocabulary square for each of the following words
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Allele
Dominant
Recessive
Law of Independent Assortment
Law of Segregation
Trait
Inherited
Heterozygous
Homozygous
Phenotype
Genotype
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4 squares:
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
Word
Definition (in your own words)
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Picture
Sentence using the word
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Time: 30 minutes

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Punnett squares are used to predict the probability of genetic traits in offspring
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The genotype is the genetic make up of the trait, and the phenotype is the physical characteristic the trait produces
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Example – Flower colour
Genotype
PP
Pp
Pp
Phenotype
Purple flower
Purple flower
White flower
Hetero/homozygous
Homozygous
Heterozygous
Homozygous

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
Construct a Punnett square to show the possible outcomes for the following crosses:
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PP x pp
Pp x pp
Pp x Pp
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What are the genotypes and phenotypes for the offspring?
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What are the phenotypic ratios for the offspring?
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Time: 15 minutes

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
Complete the “Albinism” and “Coin Toss” activities in the
Genetics packet
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Time: 20 minutes

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
Complete the “L” column of your KWL table, as well as any other questions you may have in the “W” column
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Mendel’s data

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