The tall allele is dominant and is shown as T. The small allele is recessive and is shown as t. Complete this Punnett square to show the possible allele combinations of the offspring produced when ...

Alleles can be dominant or recessive. Dominant alleles will be expressed even if a recessive allele is present. Recessive alleles will be overridden by the presence of a dominant allele.

Genes come in different varieties, called alleles. Somatic cells contain two alleles for every gene, with one allele provided by each parent of an organism. Often, it is impossible to determine ...