After chromosomes are formed, during which phase of mitosis do the chromosomes attach to the spindle fibers by their centromeres?
anaphase
prophase
metaphase
telophase

metaphase

Explanation:

the menstrual cycle – higher tier. negative feedback mechanisms affect the production of hormones in the menstrual cycle. oestrogen also stimulates the release of lh (luteinising hormone) from the pituitary gland, which in turn controls the production of progesterone.

colors do exist. the color of the sky is actually violet; humans percieve the color of the sky as blue.