Weegy: The hollow collection of undifferentiated cells that occurs after fertilization and initial mitosis is called a blastocyst.
User: Diastolic describes a measurement of which of the following?
Weegy: Diastolic describes a measurement of pressure in your blood vessels when your heart rests between beats.
User: Which of the following would result in fraternal twins who don’t have identical dna
Weegy: Two sperm fertilizing two different eggs that were released in the same cycle would result in fraternal twins, who don't have identical DNA.
User: Which structure or substance is responsible for helping filter and clean air as it passes through the trachea and bronchioles
Weegy: Cilia is responsible for helping filter and clean air as it passes through the trachea and bronchioles.
User: Which of the following is true of red blood cells
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