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5.7 Tracing your family history
When a gene is located on the X-chromosome, we call this a ...
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Slide 1:
Open question
Biologie
Middelbare school
havo, vwo
Leerjaar 3
This lesson contains
10 slides
, with
interactive quizzes
,
text slides
and
1 video
.
Lesson duration is:
50 min
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Items in this lesson
When a gene is located on the X-chromosome, we call this a ...
Slide 1 - Open question
Can a man be a carrier for a sex-linked-gene?
Slide 2 - Open question
Why do men have a higher chance of expressing a sex-linked-gene in their phenotype?
Slide 3 - Open question
PEDIGREES
Slide 4 - Slide
Slide 5 - Video
LET'S PRACTISE
Could this disease be ...
a.
autosomal dominant?
b.
autosomal recessive?
c.
X-linked dominant?
d.
X-linked recessive?
Yes / No ? Explain your answer.
Slide 6 - Slide
Autosomes
Autosomes
'Normal' genes
AA - Aa - aa
Sex chromosomes
Sex-linked genes
X
H
X
H -
X
H
X
h -
X
h
X
h
X
H
Y -
X
h
Y
Slide 7 - Slide
LET'S PRACTISE
Could this disease be ...
a.
autosomal dominant?
No
b.
autosomal recessive?
Yes
c.
X-linked dominant?
No
d.
X-linked recessive?
Yes
Yes / No ? Explain your answer.
Slide 8 - Slide
LET'S CHECK
THE HOMEWORK
Download the answers from SOM &
Discuss the answers with a classmate.
Slide 9 - Slide
LET'S PRACTISE!
Download the exercises linked on SOM.
Answer the exercises to practise how to calculate probabilities &
apply your knowledge on mutations.
Slide 10 - Slide
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