Genes and Punnett Squares

Front

What is the phenotype of an organism with the genotype BB?

Back

The phenotype is blue.

Front

Is 'freckles' a genotype or phenotype?

Back

Phenotype.

Front

What does DNA stand for?

Back

Deoxyribonucleic acid.

Front

What is the term for the genotype DD?

Back

Homozygous dominant.

Front

What is the genotype for an organism that has one dominant and one recessive allele, such as Tt?

Back

Heterozygous.

Front

What is a Punnett Square used for?

Back

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

Front

Define homozygous.

Back

Having two identical alleles for a particular gene.

Front

Define heterozygous.

Back

Having two different alleles for a particular gene.

Front

What is the difference between genotype and phenotype?

Back

Genotype refers to the genetic makeup, while phenotype refers to the observable traits.

Front

What is a dominant allele?

Back

An allele that expresses its trait even in the presence of a recessive allele.