Question

it is now six weeks since jennifer conceived. at this point, the human organism she is carrying is called a(n) _; at the third month, it will be called a(n) _. zygote; fetus fetus; embryo embryo; zygote embryo; fetus

Explanation:

• A zygote is the initial cell formed when a sperm and egg fuse.
• An embryo is the developing organism from about 2 - 8 weeks after conception.
• A fetus is the developing organism from 9 weeks after conception (third month) until birth.

Since Jennifer is six weeks pregnant, the organism is an embryo. At the third month (9 weeks +), it is a fetus.

Answer:

embryo; fetus