The Term for the Two Days of the Year When

question 18

Essay

The term for the two days of the year when the circle of illumination crosses the equator at right angles to provide 12 hours of daylight at every spot on the globe is _______________.

---

Definitions:

Electrophoresis

A laboratory technique used to separate DNA, RNA, or protein molecules based on their size and electrical charge.

Nucleic Acid Probe

A nucleic acid probe is a segment of DNA or RNA labeled with a radioactive or fluorescent marker used to detect the presence of complementary sequences in DNA or RNA samples by hybridization.

Western Blot

A technique in which proteins, previously separated by gel electrophoresis, are transferred to paper. A specific labeled antibody is generally used to mark the location of a particular protein. Compare with Southern blot and Northern blot.

Bt Crops

Genetically modified crops that express toxins from the bacterium Bacillus thuringiensis, which are lethal to certain insect pests.