Help me pls I give you the brainness

Surrounded by microtubules, located near the nucleus. (don't try to google it) (give answer only if u know)

Complete the possible outcomes for each generation in the pedigree chartaa aa aa

Out of the seven main animal groups (fish, mammals, birds, insects, reptiles, amphibians, and arachnids), how many contain members with internal backbones? a. 5 b. 3 c. 7 d. 1