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71.What began as a single fertilized egg has just separated

Question : 71.What began as a single fertilized egg has just separated : 1408608

 

 

71.What began as a single fertilized egg has just separated into two distinct eggs. This indicates the formation of ____ twins that has occurred during the ____ period of development.

a.fraternal; zygoticc.identical; zygotic

b.fraternal; embryonicd.identical; embryonic

 

 

 

72.The point at which a zygote burrows into the uterine wall is referred to as

a.fertilization.c.niche-picking.

b.implantation.d.dilation.

 

 

 

73.A physician has just informed pregnant Moesha that the human organism developing inside of her has just begun to show differentiation of its cells. As a knowledgeable student, you would know that such an organism is technically call a(n)

a.embryo.c.fetus.

b.zygote.d.neonate.

 

 

 

74.Pregnant Patty’s body is currently experiencing the event that triggers hormonal changes that will prevent further menstruation. This event is called

a.implantation.c.dilation.

b.conception.d.effacement.

 

 

 

75.The ____ is the cluster of cells in the center of the zygote that will eventually develop into the baby.

a.Amnionc.germ disc

b.stem celld.placenta

 

 

 

76.I am the structure through which a mother and an embryo exchange waste and nutrients. I am called the

a.amnion.c.germ disc.

b.stem cell.d.placenta.

 

 

 

77.The developing human organism that has just become completely embedded in the wall of the uterus is called the

a.amnion.c.zygote.

b.fetus.d.embryo.

 

 

 

78.At five weeks after conception, a developing human is most accurately called a(n)

a.embryo.c.fetus.

b.zygote.d.neonate.

 

 

 

79.Hair and the nervous system develop during the embryonic period from cells contained in the ____ layer.

a.mesodermc.placenta

b.endodermd.ectoderm

 

 

 

80.Damage to cells in the embryo’s ____ layer would be most likely to result in the development of a defective digestive system.

a.endodermc.ectoderm

b.placentad.mesoderm

 

 

 

 

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