5.5 When Genes Change

Today
  1. Quiz
  2. HW check: 30 - 32 + 34
  3. Continue: 5.5
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Slide 1: Slide
Biologie9th Grade

This lesson contains 34 slides, with interactive quizzes, text slides and 1 video.

time-iconLesson duration is: 45 min

Items in this lesson

Today
  1. Quiz
  2. HW check: 30 - 32 + 34
  3. Continue: 5.5

Slide 1 - Slide

Slide 2 - Slide

Which autosomal cross results in a phenotype ratio of 3:1?
A
BBx bb
B
Bb x bb
C
Bb x Bb

Slide 3 - Quiz

Which autosomal cross results in a genotype ratio of 1:2:1?
A
BBx bb
B
Bb x bb
C
Bb x Bb

Slide 4 - Quiz

Which autosomal cross results in a phenotype and genotype ratio of 1:1?
A
BBx bb
B
Bb x bb
C
Bb x Bb

Slide 5 - Quiz

Homework check
WB page 150 Q 27

Slide 6 - Slide

Slide 7 - Slide

5.5 When Genes Change
TB page 138

Slide 8 - Slide

Slide 9 - Slide

The penguin’s strange coloring is due to a condition called leucism, which results in a loss of pigmentation.

“This is a leucistic penguin,” Adams says. “Its cells don’t create melanin anymore so its black feathers become this yellow and creamy color.”
https://petapixel.com/2021/02/18/wildlife-photographer-captures-never-before-seen-yellow-penguin/

Slide 10 - Slide

timer
0:30
What is a mutation?

Slide 11 - Mind map

Keywords
  • Mutation = a change in a gene


  • Tumour = an uncontrolled growth of cells.

Slide 12 - Slide

3

Slide 13 - Video

01:34
In DNA damage, a T base bonds with another T base on the same strand instead of with...
timer
0:10
A
a C on the same strand
B
an A on the same strand
C
a C on the opposite strand
D
an A on the opposite strand

Slide 14 - Quiz

01:48
What causes a mutation?
timer
0:10
A
The repair of DNA
B
A mistake in the repair of DNA

Slide 15 - Quiz

02:24
Which is the incorrect statement?
timer
0:10
A
UV damages the immune system
B
The immune system prevents mutations
C
The immune system helps fight cancer
D
UV damages DNA

Slide 16 - Quiz

Mutations
A change in a gene
  • Body cells: only you
  • Gametes (sex cells): transferred
    to next generations

Slide 17 - Slide

Slide 18 - Slide

Workbook page 152
questions 30 - 32 and 34
timer
5:00

Slide 19 - Slide

Slide 20 - Slide

Slide 21 - Slide

Today
  1. Quiz
  2. HW check
  3. New section: 5.5

Slide 22 - Slide

Inherited diseases
  • Dominant diseases
  • Recessive diseases

Slide 23 - Slide

What is a dominant allele?

Slide 24 - Open question

What is a 'carrier' person? (hint: use the word allele in your answer)

Slide 25 - Open question

Which genetic disease is more dangerous?
A
a dominant disease
B
a recessive disease

Slide 26 - Quiz

Why is a dominant disease more dangerous?
A
You need only 1 allele to be sick
B
You need 2 alleles to be sick
C
You get an allele from both parents
D
You have a higher chance of giving it to your kids

Slide 27 - Quiz

Slide 28 - Slide

Slide 29 - Slide

Slide 30 - Slide

Slide 31 - Slide

Workbook page 153
questions 35 and 36
timer
5:00

Slide 32 - Slide

Slide 33 - Slide

Slide 34 - Slide