Which of the following processes takes place during prophase?
a. nuclear membranes form around two sets of chromosomes.
b. chromosomes condense.
c. chromosomes are copied.
d. spindle fibers pull the sister chromatids apart.

Indicate the coat color and the proportion of offspring with that color for each of the following crosses of rabbits. assume all are homozygous. chinchilla x chinchilla 1/2 agouti, 1/2 chinchilla 3/4 agouti, 1/4 chinchilla all chinchilla

When ash and dust begin to settle on the ground, they eventually become compacted by

These are the components of the reservoirs of carbon that are exchanged in our environment.