Punnett Squares

Front

An allele is represented by ___ letter(s).

Back

1

Front

B = brown eyes
b = blue eyes
What is true about these two brothers that have brown eyes?
One has genotype BB the other Bb.

Back

They have same phenotype but different genotypes.

Front

T - tall and t = short
In the punnett square below, what belongs in the missing square?

Back

tt

Front

Dominant alleles are represented by a _______.

Back

capital letter.

Front

Purebred is the same as _______ and hybrid is the same as ________.

Back

homozygous, heterozygous.

Front

What is a Punnett Square used for?

Back

To predict the genotypes and phenotypes of offspring from parental crosses.

Front

What does homozygous mean?

Back

Having two identical alleles for a particular gene.

Front

What does heterozygous mean?

Back

Having two different alleles for a particular gene.

Front

What is the phenotype of an organism?

Back

The observable physical characteristics of an organism.

Front

What is the genotype of an organism?

Back

The genetic makeup of an organism, represented by alleles.