In Drosophila, the sex of a fly with the karyotype XO:2A is ________

Fill in the blank(s) with correct word


male

Biology & Microbiology

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An identifying structural characteristic of phloem is ________

a. mesophyll b. vessels of dead cells c. tracheids d. sieve tubes

Biology & Microbiology

Which stage(s) produce(s) the characteristic chills

and fever of the disease? a. A b. B c. C d. A and B e. B and C

Biology & Microbiology

In the lysogenic bacteriophage life cycle, the ? chromosome

A) replicates and the phage genes take over the bacterium. B) inserts itself physically into the host cell's chromosome. C) expresses a repressor protein gene that inhibits the lytic pathway. D) is replaced by a piece of bacterial DNA when packaged inside phage progeny. E) Both B and C

Biology & Microbiology

A cell membrane is said to be a fluid mosaic because

A. there is water in the membrane. B. the membrane is made of lipids and proteins that can move. C. it forms a bilayer. D. transport proteins allow for the movement of water-soluble molecules.

Biology & Microbiology