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Genetics puzzle
Every fly has two copies of each gene. It gets one copy from each of its
parents.
In the eye, the gene for the colour RED is stronger than the gene for white. A
fly with one RED gene and one white gene has Orange eyes.
What colour eyes will the children of two Orange-eyed flies have?
Remember! Each baby fly gets one gene copy from each parent!
RED + white = Orange
Gene 1 = ____________
Gene 2 = ____________
Eye colour = _________
Gene 1 = ____________
Gene 2 = ____________
Eye colour = _________
Gene 1 = ____________
Gene 2 = ____________
Eye colour = _________
RED + white = Orange
If the Orange-eyed parents have 40 children, how many of each
colour will there be?
Alic
ia H
idal
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bo
rato
ry r
eso
urc
es f
or
Bra
in A
war
enes
s W
eek
20
12
,
reso
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e cr
eate
d b
y Si
mo
n B
ish
op
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