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

go la

bo

rato

ry r

eso

urc

es f

or

Bra

in A

war

enes

s W

eek

20

12

,

reso

urc

e cr

eate

d b

y Si

mo

n B

ish

op