A gene that specifies the fate of a particular anatomical segment in Drosophila is called a(n) ________

Fill in the blank(s) with correct word


selector gene

Biology & Microbiology

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Suppose an Rh- mother gives birth to an Rh- baby. Is there a danger of hemolytic disease of the newborn developing during a subsequent pregnancy? Why or why not?

What will be an ideal response?

Biology & Microbiology

The economic gap between rich and poor countries has narrowed over the last two decades

Indicate whether this statement is true or false.

Biology & Microbiology

What limits the frequency of action potentials?  

A.  chloride ions B.  spike amplitude C.  nodes of Ranvier D.  refractory period

Biology & Microbiology

The outside of a neuron is positively charged at resting potential. Why do K+ ions leave the cell when K+ channels open during an action potential?  

A.  The diffusion gradient is the only factor that affects ion movement. B.  K+ ions are actively pumped out by the sodium-potassium pump acting in reverse. C.  Voltage-gated K+ channels open when membrane potential reaches +50 mV during the depolarization phase. The diffusion gradient and electrical force cooperate to drive K+ ions out of the cell. D.  Negatively charged proteins leave the cell at the onset of the action potential.

Biology & Microbiology