10xSc4 Punnet Squares(1) 2

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1.
_______zygous
Punnett Squares
_______zygous
B
b
Which parents will only
have brown-eyed offspring?
B
b
3.
B
B
TASKS
1. Complete the 3 punnet squares.
2. Identify if the parents are
homozygous or heterozygous.
3. Colour in the boxes to show
_______zygous
_______zygous
Name ____________
2.
_______zygous
b
B
b
_______zygous
B
b
b
the offsprings’ eyecolour
b = blue
(recessive)
B = brown
(dominant)
Which parents are most likely
to have blue-eyed offspring?
4. Answer the eye questions!
HINTS
Same letters = HOMOZYGOUS
Different letters = HETEROZYGOUS
The sqaure shows the
POSSIBLE offspring.
Capital letter = DOMINANT GENE
Little letter = RECESSIVE GENE
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