In prophase I of meiosis in female Drosophila, studies have shown that there is phosphorylation of an amino acid in the tails of histones of gametes. A mutation in flies that interferes with this process results in sterility. Which of the following is the most likely hypothesis?
A) These oocytes have no histones.
B) Any mutation during oogenesis results in sterility.
C) All proteins in the cell must be phosphorylated.
D) Histone tail phosphorylation prohibits chromosome condensation.
E) Histone tails must be removed from the rest of the histones.
Welwitschia-mirabilis-female
Imaginal disks in the development of Drosophila
Wearing a pedometer, like the one shown here, can help you track your steps
A comparison of the events in mitosis (left) and meiosis (right)
Which of the 3 structures shown below has the shortest bond length? Justify your answer.
Female copepod with eggs