Asked Sep 16, 2019

. Summarize the development of an embryo and a fetus. Explain when body parts, including but not limited to the heart, nervous system, and skeleton, are formed.


Expert Answer

Step 1

Fertilization is the process of fusion of male and female gametes to form a zygote. The zygote then undergoes a series of divisions to form the embryo. The embryo is an undifferentiated mass of cells that undergo developmental changes. These changes lead to the differentiation and specialization of cells to form specialized tissues and organs of the organism.

Step 2

Embryonic development is also known as embryogenesis. This process includes the formation and development of the embryo inside the uterine cavity of a sexually reproducing mother. The whole process of embryonic development takes place in different stages, including germinal stages fertilization, blastulation, and implantation of the embryo), gastrulation (formation of gastrula), neurulation, development of nervous system, bloo...

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Developmental Biology

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