Genotype and

Phenotype

Allele from male parent Allele from female parent

Gene for fur color Gene for fur color

P Parent generation

f fhomozygous

F Fhomozygous

purebred

F F

f

f

Parent

Parent

F F

F F

f f

f f

Homozygous ff

Homozygous FF

F1 Filial Generation 1

Genotype F f

Phenotype

Phenotype

Genotype F f

Genotype F f Genotype F f

F f

F

f

F F

F f

F f

f f

Heterozygous Ff

Heterozygous Ff

F2 Filial Generation 2

F f

F f

F F

f f

Yellow corn and white corn diagram

Has gene to make

yellow color

Does not have

Gene to make

yellow color

2 copies of geneIf either allele has the codeFor making the yellow color,The corn is yellow.

Yellow is dominant. You can usecapital Yfor the label.

Y Y Y y

Y Y

y

y

ParentYY

Parentyy

Y Y

Y Y

y y

y y

Crosspollination

F1 Generation

Y y

Y y Y y

Y y

Y y

Y

y

Yy Parent

Yy Parent

Y Y

Y y

Y y

y y

F2 Generation

Y Y

Y y y y

Y y

Quiz

What is the genotype?

What is the phenotype?

WhiteWhite

Quiz

What is the phenotype?

What is the genotype?

aleurone

The aleurone is a coating over the corn kernel.

If the aleurone is purple it masksthe color of the inside of the kernel.

Figure out if the gene for purple is dominant or recessive.

HomozygousPurple aleurone

P Parent generation

HomozygousClear aleurone

Purple

Clear

Purple Purple

Clear

Clear

ParentPurple aleurone

ParentClear aleurone

F1 Filial Generation 1

P P

p

p

PP ParentPurple aleurone

pp ParentClear aleurone

P P

P P

p p

p p

Crosspollination

Pp Purplealeurone

PpPurple aleurone

P p

P

p

ParentPurple aleurone

ParentPurple aleurone

P P

P p

P p

p p

F2 Generation

P P

p pP p

P p