Crossing over takes place during
a. early prophase 1 of meiosis only
b. middle prophase 1 of meiosis only
c. both prophase 1 and prophase 2 of meiosis
d. interphase
Answer: a. early prophase 1 of meiosis only
You might also like to view...
The procedure lithotripsy is used to treat ____
a. chronic hypertension b. metabolic acidosis c. hemodialysis d. polycystic kidney disease e. kidney stones
Binding of the appropriate aminoacyl-tRNA to the A site requires:a
no additional energy. b. the input of two ATP molecules to supply the needed energy. c. energy supplied by GTP. d. activation of the A site. e. phosphorylation of the tRNA molecule.
Why can't polysaccharides, lipids, or proteins permeate the cell membrane? Why are extracellular enzymes essential for microbes?
What will be an ideal response?
In what way are eyes and eyespots similar to each other?
a. They are both simple. b. They both sense light. c. They are both big. d. They both sense the absence of light.