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The inner cell mass is also known as the trophoblast.
False
The genetic engineering of a human child, the production of "designer babies" with desirable phenotypic characteristics, was once a topic restricted to science fiction.
False
Eugenics is the use of information and technology from a variety of sources to improve the genetic makeup of the human race.
True
The goal of creating genetically superior humans was not prevalent in several countries during the early 20th century.
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Prenatal genetic diagnosis (PGD) has not been developed in more recent times.
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Cleavage is a process where the zygote undergoes multiple rounds of cell division to form the blastula.
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The blastula is a solid mass of cells without any internal cavity.
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In placental mammals, including humans, the eggs undergo meroblastic cleavage due to the presence of a large amount of yolk.
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The blastocyst is a structure formed during the blastula stage in mammals, characterized by an inner cell mass distinct from the surrounding blastula.
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During cleavage, the total mass of the cells increases as the zygote divides into multiple smaller cells.
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In the blastocyst stage of mammalian development, the cells arrange themselves into two layers: the inner cell mass and the trophoblast.
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