How are gene pairs written out?

Gene pairs are written out by writing a combination of two capital or lowercase letters.

Explanation:

where is the diagram?

if you insert the diagram ill be able to you

in the year 2850, humans successfully colonized mars. the martian modules that were constructed could hold only a small population of people. it is now a century later, and the population on mars has grown to 600 people. of the current mars population, 45 people express the recessive phenotype for phenylketon- uria (pku) syndrome (pp genotype).

explanation: