Genetics

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Across
  1. 2. an individual animal, plant, or single-celled life form.
  2. 4. ribonucleic acid, a nucleic acid present in all living cells. Its principal role is to act as a messenger carrying instructions from DNA for controlling the synthesis of proteins, although in some viruses RNA rather than DNA carries the genetic information.
  3. 6. a change in the gene
  4. 7. a unit of heredity which is transferred from a parent to offspring and is held to determine some characteristic of the offspring.
  5. 8. the set of observable characteristics of an individual resulting from the interaction of its genotype with the environment.
  6. 9. a type of cell division that results in two daughter cells each having the same number and kind of chromosomes as the parent nucleus, typical of ordinary tissue growth.
Down
  1. 1. a threadlike structure of nucleic acids and protein found in the nucleus of most living cells, carrying genetic information in the form of genes.
  2. 3. specific combination of genes
  3. 5. a self-replicating material that is present in nearly all living organisms as the main constituent of chromosomes. It is the carrier of genetic information.
  4. 6. a type of cell division that results in four daughter cells each with half the number of chromosomes of the parent cell, as in the production of gametes and plant spores.