Although not yet aware of her pregnancy mrs. upton has conceived a single cell from the union of an egg cell and a sperm cell. this single cell is called a(n):

zygote cell. there you go

answer: i don't know

explanation:

you need to provide a picture, otherwise i can't tell you.

if you can provide one, i'd be more than happy to you with this!

i might be wrong but i think its a. let me know if i’m right and have a good rest of your day!