Question

13/31
dominant alleles are represented by a(n)
upper case letter
phenotype
lower case letter
punnett square

Explanation:

In genetics (a subfield of Biology, which is part of Natural Science), dominant alleles are represented by uppercase (upper case) letters, while recessive alleles are represented by lowercase letters. A phenotype is the observable trait, and a Punnett square is a tool to predict genetic crosses. So the correct option is the one with "upper case letter".

Answer:

A. upper case letter (assuming the first option is labeled A, but based on the content, the correct choice is the option with "upper case letter")