Warm up activity
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Warm Up Activity. Quietly work on the “counting chromosomal content” worksheet. (5 minutes). Question?. What does DNA code for?. ANSWER. The nitrogen bases found in DNA code for the proteins your body makes. Those proteins determine what traits you will have. (Eye color, hair color etc..).

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Warm Up Activity

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Warm up activity

Warm Up Activity

Quietly work on the “counting chromosomal content” worksheet.

(5 minutes)


Question

Question?

What does DNA code for?


Answer

ANSWER

  • The nitrogen bases found in DNA code for the proteins your body makes. Those proteins determine what traits you will have. (Eye color, hair color etc..)


Agenda

Agenda

  • Chocolate chip cookie recipes

  • Notes on mutations

  • Mutations Worksheet


Crossing over

Crossing Over

Crossing Over = The exchange of genetic material between homologous chromosomes

occurs during meiosis and contributes to genetic variability


Let s review

Let’s Review

  • Replication = copying DNA

  • DNA  Proteins  Traits

  • If the DNA is “wrong” it can make the wrong proteins which will code for the wrong traits.


Warm up activity

  • Mutations of DNA = occurs during Replication of DNA or Cell Division


Mutations during replication

MUTATIONS DURING REPLICATION

  • Mutations in DNA will cause a change in Protein.

  • A change in the protein will cause a change in Traits. ex: hair color, eye color


There are different types of mutations

There are different types of mutations:

  • Substitution

  • Insertion (sometimes repeated)

  • Deletion/omission


Example of substitution

Example of Substitution

  • The/car/hit/the/cat

  • Substitute a p or the r

  • The/cap/hit/the/cat


Example of insertion

Example of Insertion

  • The/car/hit/the/cat

  • Insert a letter

  • The/aca/rhi/tth/eca/t


Example of deletion

Example of Deletion

  • The/car/hit/the/cat

  • Delete a letter

  • The/cah/itt/hec/at


Warm up activity

  • These mutations cause:

  • harm: Change in the protein

  • benefit: Change in the protein

  • no effect: No change in the protein


Mutations during cell division

MUTATIONS DURING CELL DIVISION

  • During Mitosis – mutations will effect body cells

  • During Meiosis – mutations have the potential to be passed on to offspring


Let s practice

Let’s Practice

  • Original strands:

    A C T C

    T G A G

  • After Replication:

    A C T C

    T G A G A

    What type of mutation is this?


Warm up activity

  • Original strands:

    A C T C

    T G A G

  • After Replication:

    A C T C

    T G A T

    What type of mutation is this?


Warm up activity

  • Original strands:

    A C T C

    T G A G

  • After Replication:

    A C T C

    T G A G T

    What type of mutation is this?


Warm up activity

  • Overall, the organism is either harmed, benefits or has no effect from a DNA mutation.


Warm up activity

Mutation Worksheet


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