5.5 When genes change

5. It runs in the family
On inheritance, family trees, genetics and DNA

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Slide 1: Slide
BiologieMiddelbare schoolvwoLeerjaar 3

This lesson contains 15 slides, with interactive quizzes, text slides and 5 videos.

time-iconLesson duration is: 45 min

Items in this lesson

5. It runs in the family
On inheritance, family trees, genetics and DNA

Slide 1 - Slide

Slide 2 - Video

How do you get a mutation in your DNA?

Slide 3 - Open question

mutations
= change in a gene or chromosome (genotype)

This may result in no/small/large change in phenotype

Slide 4 - Slide

mutations
= change in a gene or chromosome (genotype)

This may result in no/small/large change in phenotype

the change can be negative/neutral/beneficial

Slide 5 - Slide

Slide 6 - Video

mutations 

Slide 7 - Slide

mutations 
External caused by known mutagens 
  • Radiation: (eg. UV light, X-ray, radioactive decay)
  • Chemicals (eg. benzene in cigarette smoke)
  • Bacteria or viruses (eg. HPV)
Internal
  • DNA replication




Slide 8 - Slide

Slide 9 - Video

mutations 
Gene mutations
    Defect of a gene
    eg. sickle cell disease
Chromosome mutations
    Change in a whole chromosome
     eg. extra chromosome 21 leads to Down Syndrome


Slide 10 - Slide

Slide 11 - Video

Definitions
A= healthy
a = sickle cell disease

Person with AA is healthy
Person with aa has sickle cell disease
Person with Aa is a 'carrier'

Slide 12 - Slide

Slide 13 - Video

Which question do you have
after this lesson?

Slide 14 - Mind map

lesson plan
Review 5.4 Monohybrid crosses
5.5 video and notes
Make 5.5 exercise 3-5 online

Slide 15 - Slide