In embryonic development, the term “polarity” refers to
A.
B.
C.
D.
Correct. See Key Concept 19.2 Gene Expression Differences Determine Cell Fate and Cell Differentiation
Incorrect. See Key Concept 19.2 Gene Expression Differences Determine Cell Fate and Cell Differentiation
Animation 19.2 Quiz
At the 8-cell stage, a sea urchin embryo can be divided into two halves each containing 4 cells. Each half will develop into a normal larva if the cut is _______ to the animal–vegetal axis.
A.
B.
C.
D.
Correct. See Key Concept 19.2 Gene Expression Differences Determine Cell Fate and Cell Differentiation
Incorrect. See Key Concept 19.2 Gene Expression Differences Determine Cell Fate and Cell Differentiation
Animation 19.2 Quiz
Which scenario could be expected to lead to polarity within a single cell?
A.
B.
C.
D.
Correct. See Key Concept 19.2 Gene Expression Differences Determine Cell Fate and Cell Differentiation
Incorrect. See Key Concept 19.2 Gene Expression Differences Determine Cell Fate and Cell Differentiation
Animation 19.2 Quiz
Refer to the figure below.
In which of the two cell divisions shown is there evidence of an unequal distribution of a cytoplasmic determinant?
A.
B.
C.
D.
Correct. See Key Concept 19.2 Gene Expression Differences Determine Cell Fate and Cell Differentiation
Incorrect. See Key Concept 19.2 Gene Expression Differences Determine Cell Fate and Cell Differentiation