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Question
According to the passage, the morphogenetic determinants present in the unfertilized egg cell are which of the following?
Options:
A .  Proteins bound to the nucleus
B .  Histones
C .  Maternal messenger RNA’s
D .  Nonbeaded intervening DNA
Answer: Option C
:
C
C is the best answer. Lines 38-41 in from us that in his study of sea urchins, Gross “found that an unfertilized egg contains substances that function as morphogetic determinants.” Lines 58-60 assert that the “substances that Gross studied are maternal messenger RNA’s,” and in lines 62-63 we learn that these maternal messenger RNA’s can be found in “ a wide variety of organisms.”

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