Question

18/31
dominant alleles are represented by a(n)
lower case letter
punnett square
phenotype
upper case letter

Explanation:

In genetics (a subfield of Biology, which is part of Natural Science), dominant alleles are represented by upper - case letters, while recessive alleles are represented by lower - case letters. A Punnett square is a tool used to predict genetic crosses, and a phenotype is the observable characteristic of an organism. So the correct option related to the representation of dominant alleles is "upper case letter".

Answer:

D. upper case letter (assuming the options are labeled A - D as A. lower case letter, B. punnett square, C. phenotype, D. upper case letter)