Question

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

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

Answer 1

The correct option is C

Maternal messenger RNA’s

In his study of sea urchins, Gross “found that an unfertilized egg contains substances that function as morphogenetic determinants”. The passage asserts that the “substances that Gross studied are the maternal messenger RNA’s”, and it can be understood that these maternal messenger RNA’s can be found in "a wide variety of organisms".