Punnett Square Practice

Front

What does heterozygous mean in genetics?

Back

Heterozygous refers to having two different alleles for a particular gene.

Front

What is the dominant allele in a Punnett Square?

Back

The dominant allele is the one that expresses its trait in the phenotype, even when paired with a different allele.

Front

In a Punnett Square, what does a 100% probability of an offspring being purple indicate?

Back

It indicates that all offspring will express the dominant trait, which in this case is purple color.

Front

If T represents tall and t represents short, what is the phenotype ratio for short plants in a cross of Tt x Tt?

Back

The ratio for short phenotype is 1:4.

Front

What is the expected ratio of offspring that could be short in a cross of TT x tt?

Back

The expected ratio is 0 in 4, meaning no short offspring will be produced.

Front

In a heterozygous genotype, which allele takes precedence in the phenotype?

Back

The dominant allele takes precedence in the phenotype.

Front

What is a Punnett Square used for in genetics?

Back

A Punnett Square is used to predict the genotypes and phenotypes of offspring from a genetic cross.

Front

Define genotype in the context of genetics.

Back

Genotype refers to the genetic makeup of an organism, specifically the alleles it possesses.

Front

What is the difference between homozygous and heterozygous?

Back

Homozygous means having two identical alleles for a gene, while heterozygous means having two different alleles.

Front

What does a phenotype represent?

Back

A phenotype represents the observable traits or characteristics of an organism.