AP BIOLOGY

Detailed explanation-1: -During mitosis, loosely arranged strands of chromosomes become coiled, shortened and distinct during the metaphase. a) True, loosely arranged strands of chromosomes become coiled, shortened and distinct during the prophase .

Detailed explanation-2: -During prophase, the loosely coiled chromatin begins to condense into distinct chromosomes while the spindle apparatus migrates to opposite poles of the cell.

Detailed explanation-3: -During metaphase, the nucleus dissolves and the cell’s chromosomes condense and move together, aligning in the center of the dividing cell. At this stage, the chromosomes are distinguishable when viewed through a microscope.

Detailed explanation-4: -First stage of mitosis; chromatin begins to coil and condense to form chromosomes. Microtubules associated with movement of the chromosomes during division. Point of attachment of the spindle and the centromere.

Detailed explanation-5: -The first and longest phase of mitosis is prophase. During prophase, chromatin condenses into chromosomes, and the nuclear envelope (the membrane surrounding the nucleus) breaks down. In animal cells, the centrioles near the nucleus begin to separate and move to opposite poles of the cell.