Asked by Kayla Burke on Jun 11, 2024
Verified
Which developmental stage occurs first?
A) cleavage
B) fetus
C) gastrula
D) zygote
E) blastula
Gastrulation
Animal developmental process by which cell movements produce a three-layered gastrula.
Blastula
Hollow ball of cells that forms as a result of cleavage.
Zygote
Diploid cell that forms when two gametes fuse; the first cell of a new individual.
- Describe the sequence of developmental stages from fertilization to the formation of the embryo.
Verified Answer
AN
Aashir NaeemJun 17, 2024
Final Answer :
D
Explanation :
The zygote is the first stage of development, as it is formed from the fusion of the egg and sperm.
Learning Objectives
- Describe the sequence of developmental stages from fertilization to the formation of the embryo.