You should post the diagrams but basically there are more cells than tissues and more tissues than organs
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Chromatin is the mass of DNA molecules which is undistinguishable however chromatids are part of a chromosome attached with a centromere. Also, chromatin is the DNA before it coils and chromatid are the things that contains the DNA.
Answer: HIV & related viruses such as HTLV possess unusual virally encoded reverse transcriptase enzyme.
Reverse transcriptase is an enzyme which synthesizes a complementary DNA or cDNA from a RNA template strand. The process of reverse transcription is used by the retroviruses for replicating their genome and proliferating within the host genome. The HIV uses reverse transcriptase to infect humans. Without the reverse transcriptase enzyme the genome of the virus cannot incorporate into the host cell and will fail to replicate. HTLV or human T-lymphotropic virus or HTLV also uses the same mechanism with the enzyme reverse transcriptase.
Personality, perception, and learning
