Genotype and Phenotype

Allele from male parentAllele from female parent Gene for fur color

P Parent generation f homozygous F homozygous purebred

F F f f Parent FF FF ff f f Homozygous ff Homozygous FF

F1 Filial Generation 1 Genotype F f Phenotype Genotype F f

F f F f FF Ff Ff f f Heterozygous Ff

F2 Filial Generation 2 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 gene If either allele has the code For making the yellow color, The corn is yellow. Yellow is dominant. You can use capital Y for the label. Y Y Y y

Y Y y y Parent YY Parent yy YY YY yy y y Crosspollination

F1 Generation Y y

Y y Y y Yy Parent YY Yy Yy y y

F2 Generation Y Y yy Y y

Quiz What is the genotype? What is the phenotype? White

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 masks the color of the inside of the kernel. Figure out if the gene for purple is dominant or recessive.

Homozygous Purple aleurone P Parent generation Homozygous Clear aleurone

Purple Clear

Purple Clear Parent Purple aleurone Parent Clear aleurone F1 Filial Generation 1

P P p p PP Parent Purple aleurone pp Parent Clear aleurone PP PP pp p p Crosspollination

P p Purple aleurone P p Purple aleurone

P p P p Parent Purple aleurone Parent Purple aleurone PP Pp Pp p p

F2 Generation P p P p