AP BIOLOGY

Detailed explanation-1: -Chromatin fibers can unwind for DNA replication and transcription. When cells replicate, duplicated chromatins condense further to become a lot like chromosomes, visible under microscope which are separated into daughter cells during cell division.

Detailed explanation-2: -Chromosomes are single-stranded groupings of condensed chromatin. During the cell division processes of mitosis and meiosis, chromosomes replicate to ensure that each new daughter cell receives the correct number of chromosomes.

Detailed explanation-3: -Chromatin exists in two forms. One form, called euchromatin, is less condensed and can be transcribed. The second form, called heterochromatin, is highly condensed and is typically not transcribed.

Detailed explanation-4: -Chromatin is the complex of genomic DNA with proteins called histones, where each histone-bound DNA molecule is referred to as a chromosome.

Detailed explanation-5: -condensed chromosome A highly compacted molecule of DNA and associated proteins resulting in a cytologically distinct structure.