Question

According to the passage, the morphogenetic determinants present in the unfertilized egg cell are which of the following?

• A. Proteins bound to the nucleus
• B. Histones
• C. Maternal messenger RNA’s
• D. Nonbeaded intervening DNA

Answer 1

The correct option is C Maternal messenger RNA’s

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.”