How Was It First Determined That Genetic Material Got Combined

question 37

Multiple Choice

How was it first determined that genetic material got combined when eggs and sperm fused?

• A) It was observed that when sea urchin eggs and sperm fused, the cell nuclei fused as well, meaning the genetic material was combined.
• B) The gene sequence in newly hatched nematodes was compared to that of the parent and determined to be a mixture.
• C) The quantity of genetic material in a sperm and egg cell was compared to that of a fertilized egg, and the fertilized egg contained twice as much, meaning it had come from both the sperm and the egg.
• D) The traits of any offspring are a mixture of the traits of its parents.
• E) The genes in a frog egg and sperm cell were counted and added up, and then the genes were counted in a fertilized frog egg, and the numbers were equal.

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