The cluster of cells that develop from the zygote by the end of a two-week period is called a(n) "."

92 sathe best for the question 11. most animals and plants reproduce sexually. this means that dna is passed down to new organisms from two parental organisms. which of the following is a key advantage of sexual reproduction?

What causes temperature extremes in the desert

Works together in the synthesis, modification, packaging, and transport of lipids and proteins