Transcript Slide 1

VARIATION (D________ between us)
LABEL THESE!
I_____________ factors are caused by your GENES.
E.g.__________________
E___________ factors are caused by your surroundings and how you live
your life. E.g.__________________
D = dimples
You & Your
Genes 1
D
d
d = no dimples
Which is dominant? _____________
How do you know? ______________
Does this person have dimples? ____
The genotype is _________
WHERE DID YOU GET YOUR
GENES??
What is the genotype of someone with
no dimples? ___________
The ‘no-dimple’ gene is r__________
From
your
____
Fertilised egg
+
From your
____
The fertilised egg will
become an e_______,
then a f_______, and
eventually, a b______.
YOU!
Put the number of chromosomes in the boxes.
SEX CHROMOSOMES
• Put a
XX = _______
XY = _______
X
X
Y
X
round the Dad
• Put a
round a letter that
represents an egg
• Fill in the chart
• There is a ____% chance the
baby will be a girl.
• Which parent determines the
baby’s sex?
Gene therapy can be used to cure some
________. It is still in the early stages of
development.
GENETIC DISEASES
are caused by f_______ genes.
HEALTHY
GENE
Examples:
1.
__________ ___________
f
Symptoms: thick, sticky _______
F
F
F
Put into
______ of
patient
Affects: _______ & __________
systems
2. ________________ Disorder
Symptoms: loss of co-ordination and
memory
F
F
F
F
F
F
f
F
What is PGD?
Some of the ‘left-over’ embryos are
used to make STEM CELLS.
What are stem cells?
Why are they useful?
F
Patient’s
cells
reproduce
– with
healthy
gene!
F
You & Your
Genes 2
Affects: __________ system
Inheritance of CF
A carrier of CF is a person F
with one normal and one
f
faulty allele of the CF gene.
The faulty one is r_________.
What is the chance of two
carriers having a child with CF?
Make lots of
________