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A myeloid progenitor cell can differentiate into immune cells of the blood and lymph systems.

A) True
B) False

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Which of the following phrases INCORRECTLY finishes the following statement regarding morphogen distribution? Morphogen distribution inside the cell


A) is homogeneous.
B) can be established prior to fertilization of the oocyte.
C) can arise due to localized secretion by neighboring cells.
D) is dependent on CAMs.
E) is neither homogeneous nor dependent on CAMs.

F) A) and E)
G) A) and D)

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Which of the following are incorrectly matched?


A) gene A, sepal formation, whorl 1
B) gene B, petal formation, whorl 2
C) gene E petal formation, whorl 2
D) gene C stamen formation, whorl 3
E) gene B carpel formation, whorl 4

F) A) and E)
G) A) and B)

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Which of the following model organisms is/are LEAST suited to study the timing of morphological changes during embryonic development?


A) Mus musculus
B) Gallus gallus
C) Brachydanio rerio
D) Drosophila melanogaster
E) Mus musculus and Gallus gallus

F) A) and E)
G) D) and E)

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An unusual red sponge is discovered near a deep-sea vent. You want to determine if this is a new species of sponge, so you separate the cells for further study. A new lab assistant accidentally adds cells from a blue sponge to your preparation while you are at lunch. When you return, you find that the sponge cells have reaggregated into a multicellular organism. What do you see if the red and blue sponges are the same species?


A) one sponge with a red side and a blue side
B) one blue sponge and one red sponge
C) one sponge with blue and red randomly distributed
D) one purple sponge (mix of red and blue colors)
E) one sponge with alternating red and blue layers of cells

F) A) and E)
G) B) and D)

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The morphology of plants is determined


A) by cell division at the tip of the shoots and cell elongation at the tip of the roots.
B) by cell division at the tip of the roots and cell elongation at the tip of the shoots.
C) by cell elongation at both the tip of the shoots and the roots.
D) by cell death (apoptosis) along the radial axis.
E) by cell division at both the tip of the shoots and the roots.

F) A) and E)
G) A) and D)

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Apical-basal patterning genes are expressed in


A) the basal region.
B) the apical region.
C) the central region.
D) the apical, basal, and central regions.
E) the apical and basal regions only.

F) B) and E)
G) All of the above

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Place the following cell types in the correct order during the differentiation of a hematopoetic stem cell (HSC) into a macrophage. Some may be used once or not at all. I. megakaryocyte II. lymphoid progenitor III. macrophage IV. hematopoetic progenitor V. myeloid progenitor VI. monocyte VII. hematopoetic stem cell


A) VII, IV, V, VI, III
B) IV, VII, V, VI, III
C) IV, VII, II, VI, III
D) VII, IV, V, II, III
E) VII, IV, II, IV, III

F) A) and B)
G) A) and D)

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The molecular structure of invertebrate homeotic genes differs significantly from that of mammals.

A) True
B) False

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Organisms develop a normal morphology because cells can receive and interpret


A) extracellular positional information.
B) intracellular positional information.
C) both extracellular and intracellular positional information.
D) signals from other developing organisms.
E) all of the signals described in the choices.

F) A) and D)
G) A) and E)

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