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Genotypes & Phenotypes
Mrs. Rothenberger
TT
tt
-organisms’ genetic make ups
Tt
-organisms’ appearances
developed the
Problem: How can you predict traits of
offspring produced by parents with
known genotypes?
BB x pure recessive ______
bb
Cross #1- pure dominant ______
BB x hybrid ______
Bb
Cross #2- pure dominant ______
Bb x hybrid ______
Bb
Cross #3- hybrid ______
Bb x pure recessive ______
bb
Cross #4- hybrid ______
Lab book Answers
Cross #1- pure
BB x
dominant ______
pure recessive
bb
______
B
Cross #2- pure dominant
______ BB
Bb
x hybrid ______
B
b
Bb
Bb
b
Bb
Bb
B
B
B
BB
BB
b
Bb
BB
Bb
Lab book Answers
Cross #3- hybrid
Bb x hybrid
______
Bb
______
B
b
B
b
BB
Bb
Bb
bb
Cross #4- hybrid ______
Bbx pure
bb
recessive ______
B
b
b
b
Bb
bb
Bb
BB
bb
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