A teacher shows students a string of beads as a model of a chromosomes and genes. What do the beads represent? Explain

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30-05-2020
Biology

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A teacher shows students a string of beads as a model of a chromosomes and genes. What do the beads represent? Explain

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OzHamzaE OzHamzaE · Answer 1 · 2020-05-30T10:43:51+02:00

Answer:

If the string of beads refer to a chromosome, then each bead is a gene responsible for one or more traits.

If the string of beads refer to a gene, then each bead refers to the sequence of nitrogenous bases in one strand of the gene.

Explanation:

A chromosome is composed of several genes.

A gene is composed of several nucleotides each containing a nitrogenous base. A gene is primarily made functional by the sequence of nitrogenous bases in its structure. If AGATTCA is a hypothetical sequence of the nitrogenous bases on one strand of a hypothetical gene then TCTAAGT will be the sequence of nitrogenous bases on the complementary strand of that particular gene.