The ____ is the developmental origin of the body cavity between the gut and muscles of the body wall
for most protostomes.
a. schizocoelom
b. mesoglea
c. archenteron
d. enterocoelom
e. blastopore
A
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All individuals of a particular species of whiptail lizards are females. Their reproductive efforts depend on _____
A) fertilization of their eggs by males of other lizard species B) gonadal structures that only undergo mitosis C) meiosis followed by a doubling of the chromosomes in eggs D) budding prior to the development of a sexual phenotype E) fragmentation via autolysis
DNA supercoils that result from overwinding produce ____ supercoils
Fill in the blank with the appropriate word.
The function of tmRNA in bacteria is to:
A. rescue stalled ribosomes. B. terminate translation at all stopcodons. C. initiate translation at special start codons.
A female with two Barr bodies in her cells would have what combination of sex chromosomes?
A) XXY B) XXXY C) XXX D) XX E) XYY