In porcupines, long whiskers and long tails are dominant over the recessive alleles for short whiskers and short tails. If a female porcupine
with short whiskers and a short tail mates with that is heterozygous for
long whiskers and a long tail, what would be the expected genotypes and
phenotypes of the offspring from this cross?

the correct answer is option d.

an appositive is a noun, noun phrase or noun clause which follows another noun or noun phrase in order to describe it or name it another way. they are usually used between commas, brackets or dashes.

the example sentence with the correct use of commas is the following:

her uncle, the man over there in the red shirt, owns the hardware store in town.