Anonymous
Anonymous asked in Science & MathematicsBiology · 1 decade ago

the smallest unit that can evolve is?

a) a genome

b) an individual

c) a species

d) a population

e) a community

4 Answers

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  • 1 decade ago
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    Evolution is the change in allelic frequency in a population through the generations or the cumulative genetic changes in a population over time. An individual cannot evolve only a population can evolve. One individual may introduce the new allele but it must pass to the next generation to represent a shift in the alleles for that trait.

    Many genetic changes occur in organisms but they are not all passed to the future generations so this is not sufficient to be called anything more than a mutation. Only the changes that continue in time with new generations can be called evolutionary changes.

  • Anonymous
    1 decade ago

    The correct answer is a, the genome. The genome is the set of genes in an individual, and a simple mutation to a single gene in the genome may be passed on to succeeding generations (and potentially grow in frequency) depending on the vagaries of natural selection. All of the other units are larger and depend on this change in the genome to be amplified through reproduction of the gene. This pertains to the cells in the germ cell line.

    For cells that are not in the germ cell line, a mutation in a cell's genome may lead to programmed cell death, malignancy or have no consequence at all.

    Source(s): I am a biologist.
  • 1 decade ago

    D. Evolution is a change in the genetic makeup of a population over time.

  • Anonymous
    1 decade ago

    The answer that your teacher wants is probably:

    d) a population

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