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The answers are C, D, E and H ! hope this helped you :)
Answer:Each chromosome contains a linear DNA molecule, closely associated with histone proteins. DNA is genetic material, made of only four different nucleotides arranged in a double helix. ... Hence, several genes are located on same chromosome. Homologous chromosomes carry same genes, generally in same order.
Answer: The lock-and-key mechanism is usually associated with the complementary shapes of an enzyme with a single substrate wherein the lock that is being referred to is the enzyme and the substrate is the key. One right sized substrate (key) fits into the active site (key hole) of the enzyme (lock).
