Genotypes & Phenotypes

Mrs. Rothenberger

TT tt Tt

-organisms’ genetic make ups

-organisms’ appearances

developed the

Problem: How can you predict traits of offspring

produced by parents with known genotypes?

Cross #1- pure dominant ______ x pure recessive ______

Cross #2- pure dominant ______ x hybrid ______

Cross #3- hybrid ______ x hybrid ______

Cross #4- hybrid ______ x pure recessive ______

BbBBBB

bb

BbBbbbBb

Cross #1- pure dominant

______ x pure recessive ______

BB

bb

Cross #2- pure dominant ______ x hybrid ______

BBBb

BB

b

b

B

BB

b

BB

BB

Bb Bb

BB

BbBb

Bb Bb

Lab book Answers

Cross #3- hybrid ______ x hybrid ______

BB

BbCross #4- hybrid ______ x pure

recessive ______

Bbbb

b

BB b B

b

b

b

Bb

Bb

Bb bb

bb

bbBb

BB Bb

Lab book Answers