CENTRIOLES. Centrioles help align the chromosomes so they can be split.
Answer:
active transport
Explanation:
Active transport is the energy-requiring process of pumping molecules and ions across membranes "uphill" against a gradient. The active transport of small molecules orions across a cell membrane is generally carried out by transport proteins that are found in the membrane.
Answer:
D: Some traits in certain embryos disappear as the embryo develops.
Explanation:
Please tell me if I'm wrong
B, because it's not an advantage for something to be expensive and time consuming
