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52. What is the most important barrier protecting the inner contents of an animal cell from its exterior environment?

38. From the Mitosis lab: For a cell to be able to divide, all of its DNA has to be replicated and then packaged as tightly condensed, duplicated chromosomes.  Each duplicated chromosome consists of two:

10. Which of the following is the best measure of an organism’s fitness?

2. Mi pueblo/ciudad • ¿Dónde está tu pueblo/ciudad? • ¿Cómo es tu pueblo/ciudad? • Los fines de semana, ¿qué puedes hacer en tu pueblo/ciudad? • ¿Te gustaría vivir en otra ciudad? Explica por qué. (12)

2. A mutation is:

47. Which of the following statements CORRECTLY matches a key characteristic of life with its correct description?

61. In the case of Mendel’s peas. a single gene determined the color of peas of the plant. However, in humans, eye color is influenced by the combined effect of many genes.  A character such as human eye color is said to be 

21. Anatomical homology in vertebrate forelimbs is considered to be evidence for evolution because:

42. What does it mean when a trait is independent from another trait?