6. It can be inferred from the passage that which of the following is dependent on the fertilization of an egg?
Copying of maternal genes to produce maternal messenger RNAs
Sythesis of proteins called histones
Division of a cell into its nucleus and the cytoplasm
Determination of the egg cells potential for division
Generation of all of a cells morphogenetic determinants
7. According to the passage, the morphogenetic determinants present in the unfertilized egg cell are which of the following?
Proteins bound to the nucleus
Histones
Maternal messenger RNAs
Cytoplasm
Nonbeaded intervening DNA
8. The passage suggests that which of the following plays a role in determining whether an embryo separated into two parts will two parts will develop as two normal embryos?
Ⅰ.The stage in the embryos life at which the separation occurs
Ⅱ. The instrument with which the separations is accomplished
Ⅲ. The plane in which the cut is made that separates the embryo
Ⅰonly
Ⅱ only
Ⅰ and Ⅱ.only
Ⅰ and Ⅲ.only
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