During implantation, the trophoblast erodes a path through the endometrium. maternal blood vessels in the endometrium are walled off from the blastocyst. inner cell mass begins to form the placenta. entire trophoblast becomes syncytial inner cell mass is temporarily deprived of nutrients
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In general, characteristics that an organism survive and reproduce become more common over time. what mechanism of evolution causes this?
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What are antigens and antibodies? how are they involved in the body’s response to incompatible blood?
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This connective tissue consists of large round densely packed cells with the nucleus pushed to one side.
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Which individual below would be considered heterozygous? a. dd b. dd c. dd
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During implantation, the trophoblast erodes a path through the endometrium. maternal blood vessels i...