Which of the following has the smallest number of cells?

1 blastocyst

2 zygote

3 fetus

4 embryo

Answer B, Zygote has the least amount of cells, having only 1 cell. When an egg is fertilized by sperm it becomes a zygote until it begins the process of splitting, also called cleavage. Zygote is the first step in the development of organisms with unique genetics.

what have scientists found to be the most efficient and effective way to insert new sequences into an individual? a-scientists have created genetically altered foods that release dna during digestion. b-scientists use viruses to insert specific gene sequences. c-scientists irradiate genes so that they can be absorbed through the skin.

b brown mice / white sand dunes