The type of cellular junction prominent in the stomach and kidney is the
A) plasmodesmata.
B) gap junction.
C) adhesive junction.
D) tight junction.
E) laminin junction.
D) tight junction.
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If a mutation occurred in the cadherin gene so that the cytoplasmic domain no longer attached to the cytoskeleton, which of the following would occur?
A. Cadherins in desmosomes would no longer be anchored to intermediate filaments. B. Cadherins in adherens junctions would no longer be anchored to microtubules. C. Cadherins in hemidesmosomes would no longer be anchored to intermediate filaments. D. Cadherins in desmosomes would no longer be anchored to microfilaments.
In cocker spaniels, black coat color (B) is dominant
over red (b), and solid color (S) is dominant over spotted (s). If a red male is crossed with a black female to produce a red, spotted puppy, the genotypes of the parents (with male genotype first) will be a. Bb Ss x Bb Ss. b. bb Ss x Bb Ss. c. bb ss x Bb Ss. d. bb Ss x Bb ss. e. Bb ss x Bb ss
Bivalves lack which of the following molluscan
features? a. foot b. radula c. mantle d. shells e. visceral mass
Where does the female gametophyte form in flowering plants?
a. in a stamen b. in a carpel c. in a corolla d. in a receptacle