In biology class, Joan makes careful observations using a microscope of stained cells undergoing meiosis. During which phase of meiosis will she see homologous chromosomes first pair up?
A) anaphase I
B) prophase I
C) metaphase II
D) metaphase I
Ans: B) prophase I
You might also like to view...
A ________ is the organelle that fuses with endosomes and supplies hydrolytic enzymes necessary for the digestion of the materials within the endosome.
Fill in the blank(s) with the appropriate word(s).
Which groups of plants have at least some members that possess tissues capable of transporting water and nutrients?
_____ spermatophytes. _____ lycophytes. _____ bryophytes. _____ tracheophytes. _____ embryophytes.
Members of the ____ lineage have a pair of hinged shells thatcan be closed by contraction of one or two adductor
muscles.
a. Cephalopoda b. Polyplacophora c. Platyhelminthes d. Gastropoda e. Scaphopoda
The smallpox vaccine uses the ________ virus.
A. smallpox B. variola C. human herpesvirus 6 D. vaccinia E. herpes simplex