Genetic factors inherited from the parents are most likely to affect cell differentiation in a developing embryo. Mutations or alterations in specific genes can impact the development and specialization of cells, ultimately influencing how different tissues and organs form during embryonic growth.
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Exposure to substances such as alcohol, tobacco, certain medications, and environmental toxins during pregnancy can affect embryonic development and lead to abnormalities in differentiation. These substances can disrupt the process of cellular specialization and organization, leading to developmental problems in the child.
The greatest amount of differentiation for organ formation in embryo development is most likely to occur during the gastrulation stage. This is when the three primary germ layers - ectoderm, mesoderm, and endoderm - form, leading to the development of various organs and tissues. Organs start to take shape and differentiate as cells become specified for their future roles during this critical stage.
Exposure to a harmful substance during the first trimester of pregnancy is most likely to damage many organs in a developing embryo since this is the period when organs are forming. Any disruption during this critical period can have long-lasting effects on the overall development of the fetus.
An elite embryo is a high-quality embryo with the best chances of developing into a healthy fetus. These embryos typically have characteristics such as optimal cell division, proper genetic makeup, and the absence of abnormalities, making them more likely to result in a successful pregnancy during in vitro fertilization (IVF) procedures.
Eggs are egg-shaped because this shape is strong and helps protect the developing embryo inside. The rounded shape distributes pressure evenly, making the egg less likely to break.