5.5 When genes change

• Biologie
• Middelbare school
• vwo
• Leerjaar 3

It runs in the family

Benodigheden

- iPad

- Pen, pencil

- note book

- binder

For a mark

- No

Lessonup

- Yes

Bags

in bag closet

Phones 

in phone closet

today''s program 

par. 5.5

Learning objectives: your're able to 

• explain what a mutation is and by what it is caused
• explain how a disease can be inherited from one generation to the next

How do you get a mutation in your DNA?

mutations

- no change occurs in the phenotype

- small change occurs in the phenotype  -----------------> 

- big change occurs in the phenotype  

can be negative/neutral/beneficial

mutations 

occur in a gene or a chromosome

             in a somatic cell or a sex cell 

are caused by known mutagens 

• shortwave radiation: UV light, X-ray, radioactive decay 
• DNA reactive chemicals (f.e. benzene, agents in cigarette smoke)
• some bacteria and virusses 
• some metals (f.e. cadmium, chromium)

Write down an example of a
- beneficial mutation
- neutral mutation
- negative mutation

what causes the faulty allele for Huntington's disease still to exist?

homework

learn 5.5

do exercises 1-7

Which new words did you learn today?