One of the first steps in obtaining a karyotype (such as that shown below of a cancer cell) is treating cells with a drug that stalls cells in mitosis. Why must cells arrest in mitosis for karyotype analysis?
A. Only mitotic chromosome DNA is separated into single strands, allowing for staining by dyes.
B. Only in mitosis are homologous chromosomes paired up.
C. Only mitotic chromosomes are highly condensed and visible with a light microscope.
D. Only mitotic cells contain homologous chromosomes, because mitosis happens after DNA replication.
Ans: C. Only mitotic chromosomes are highly condensed and visible with a light microscope.
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_____ Receptor activation _____ Signal transduction _____ Activation of transcription factors _____ Cell division
If adults of reproductive age are having just enough children to replace themselves, then the population is said to have ________ fertility
Fill in the blank(s) with correct word
The Gram stain, acid-fast stain, and endospore stain ________.
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Is the genetic code the same in all living organisms?
What will be an ideal response?