Punnett Squares

Genetics Review

Vocabulary

Dominant genes:

They are the strong genes.

It will shown with capital Letter.

B= brown

Remember she got one from dad and one from mom

She might have a combination of : BB or Bb (They are dominant)

Genes

Dominant genes: use capital letters. (B, T, H R)

Recessive genes: use lower case of the same gene (b, t, h, r)

Recessive genes: weak genes

It is the lower case of dominant gene.

Lower case: b

She has both bb ( one from one and one from dad)

Fill in the Blank

Dominant genes are

Phenotype (photo) are your

• Characteristics

• Traits

Genotype:

• GENES

• THE LETTERS

Fill in the Blank

Phenotypes are

Open Ended

Genotype is the combination of

Homozygous parents have the same pair of genes.

AA (mom)

aa (dad)

HETEROZYGOUS

DIFFERENT PAIR OF GENES Bb, Gg

Multiple Choice

Homozygous are the

• same pair of genes

• Cc

• different pair of genes

Multiple Select

Recessive genes are

• strong genes

• weak genes

• BB

Multiple Choice

Heterozygous are

• The same pair of genes

• different pair of genes

• bb

Multiple Select

Wrinkle seeds are recessive over Round.

Which pair is a recessive gene?

• RR

• rr

• Rr