Twins produced when a single egg is fertilized are called ______________twins. Twins produced from two eggs ovulated at the same time are called ______________ twins.
monozygotic; dizygotic
dizygotic; monozygotic
monozygotic; identical
dizygotic; nonidentical
The Correct Answer is A
A. Monozygotic; dizygotic: Monozygotic twins are identical twins that result from the division of a single fertilized egg. Dizygotic twins, or fraternal twins, result from the fertilization of two separate eggs.
B. Dizygotic; monozygotic: This is the reverse of the correct order. Dizygotic twins come from two eggs, and monozygotic twins come from one egg.
C. Monozygotic; identical: Monozygotic twins are identical, but this choice does not mention dizygotic twins, which makes it incomplete.
D. Dizygotic; nonidentical: While dizygotic twins are nonidentical, this choice does not properly define the types of twins produced by a single egg (monozygotic).
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is False
Explanation
Both chemical and mechanical digestion indeed start in the mouth (chewing and salivary enzymes) and continue in the stomach (gastric juices and muscle contractions). This statement is accurate.
Correct Answer is True
Explanation
Chylomicrons are indeed secreted from the basal surface of the intestinal absorptive cells (enterocytes) and are absorbed into the lacteals, which are lymphatic vessels in the villi of the small intestine.
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