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TLS Online TPP Program

#Question id: 11987

A cage containing male mosquitoes has a small earphone placed on top, through which the sound of a female mosquito is played. All the males immediately fly to the earphone and thrust their abdomens through the fabric of the cage. What is the best explanation for this behavior?

#SCPH28 | Zoology
  1. The males learn to associate the sound with females.
  2. Copulation is a fixed action pattern, and the female flight sound is a sign stimulus That initiates it. 
  3. The sound from the earphone irritates the male mosquitoes, causing them to attempt to sting it.
  4. The reproductive drive is  so strong that when males are deprived of females, they will  attempt to mate with anything that has even the slightest female characteristic.
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TLS Online TPP Program

#Question id: 15181

#SCPH06 I Botany

In which kind of electrophoresis, analyte can move in either direction?
1. Gel Electrophoresis
2. PAGE
3. Free Solution
4. Capillary
TLS Online TPP Program

#Question id: 14144

#SCPH05 I Biotechnology

Gaps are added to the alignment because it ______
TLS Online TPP Program

#Question id: 746

#SCPH01 Biochemistry

Two separate chains of DNA are wound around each other, each following a helical (coiling) path, resulting in:
TLS Online TPP Program

#Question id: 1741

#SCPH05 I Biotechnology

B-cells as distinct from T-cells:
TLS Online TPP Program

#Question id: 11004

#SCPH28 | Zoology

Which of the following is most likely to cause the heart to go into spastic contraction?