Is this a picture of chromosomes before or after DNA replication during the S phase of interphase?

What maintain homeostasis when a persons internal body temperature is 97.5°f

Which scientific design has both practical limitations and limitations due to scale? studying the effect of bleach on the growth of mold spores exposing cultures of duckweed to different intensities of light observing the replication of dna molecules with a hand lens using colored marbles to model a cross between two colors of rabbits

Which could be a pathway of food through an ecosystem