what are chromosomes ????
yes bro aaj mera social science ka exam tha or 10 ko mera science ka hai
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Answer:
Chromosomes are thread-like structures in which DNA is tightly packaged within the nucleus. DNA is coiled around proteins called histones, which provide the structural support. Chromosomes help ensure that DNA is replicated and distributed appropriately during cell division. Each chromosome has a centromere, which divides the chromosome into two sections – the p (short) arm and the q (long) arm. The centromere is located at the cell’s constriction point, which may or may not be the center of the chromosome.
Chromosome
Source: National Human Genome Research Institute
At the end of each chromosome is a repetitive nucleotide sequence cap called a telomere. In vertebrates, the telomere is a TTAGGG sequence repeated to approximately 15,000 base pairs. These DNA regions serve a critical role of preserving the genomic sequence by protecting the genome from degradation, and inhibiting chromosomal fusion and recombination. These regions are also involved in chromosome organization within the nucleus.
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friendship is a relationship of mutual affection between people.[1] It is a stronger form of interpersonal bond than an association, and has been studied in academic fields such as communication, sociology, social psychology, anthropology, and philosophy. Various academic theories of friendship have been proposed, including social exchange theory, equity theory, relational dialectics, and attachment styles.