A diploid organism has two alleles for each gene.

If the ability to roll your tongue (R) is dominant over the inability to roll your tongue (r), what would be the genotype of a woman who can roll her tongue?

Which of the following mutations in a gene is/are likely to be the most problematic?

Hemophilia is an example of an x-linked trait in humans.

Eukaryotic cells process messenger RNAs before they leave the nucleus.

An anticodon is tool that viruses use to unlock the codons of its host cell.

Gene expression is a highly controlled process.

The structure of DNA was discovered in _____

A dominant allele in the genotype is always visible in the phenotype.

DNA contains all of the following nitrogenous bases except ______