Question

Amoeba Sisters Video Recap: Alleles and Genes
: In your own words, explain how a person may taste the bitterness of PTC by using the
following vocabulary words in your explanation (choose any order): trait, gene, genotype, phenotype, and alleles.
Underline each word as you use it in your explanation. In this explanation, you can treat PTC taste sensitivity as a singlegene trait. [As mentioned in the video, it may be more complex than a single-gene trait.]
________________________________________________________________________________________
________________________________________________________________________________________
____________________________________________________________________________________________________
____________________________________________________________________________________________________
__________________________________________________________________________________

Answer 1

You may inherit the ability to taste the bitterness of PTC as a single-gene _trait_ that people either show or do not show. That trait is controlled by a specific _gene_ that comes in different _alleles_ (for example a “taster” allele and a “non‑taster” allele). Your pair of alleles makes up your _genotype_ (for example TT, Tt, or tt). The visible result — whether you actually perceive PTC as bitter — is the _phenotype_ (so TT and Tt individuals typically taste PTC, while tt individuals typically do not).