Many of the molecules that actively maintain the integrity of a cell's chromosomes, particularly during DNA replication and mitosis, are involved in crossing over during ____ of meiosis.
A. prophase II
B. prophase I
C. metaphase II
D. metaphase I
E. telophase II
Answer: B
Biology & Microbiology
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The lungs lie within the ___ cavity
a. thoracic b. abdominal c. pelvic d. cranial e. spinal
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The division of a bacterial cell occurs as the:
A. chromosomes are pulled toward the ends of the cell. B. new membrane and cell wall materials begin to grow and form a septum. C. actin and microtubules constrict the cytoplasm. D. cell wall develops cracks around the equator of the cell.
Biology & Microbiology
The first self-replicating molecule was probably ________
Fill in the blank(s) with correct word
Biology & Microbiology