Genetics variation

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Across
  1. 2. selection is the differential survival and reproduction of individuals due to differences in phenotype.
  2. 3. In genetics, the phenotype is the set of observable characteristics or traits of an organism
  3. 5. An allele is a variation of the same sequence of nucleotides at the same place on a long DNA molecule, as described in leading textbooks on genetics and evolution
  4. 7. selection is the identification by humans of desirable traits in plants and animals, and the steps taken to enhance and perpetuate those traits in future generations.
  5. 8. a Mendelian gene is a basic unit of heredity and the molecular gene is a sequence of nucleotides in DNA that is transcribed to produce a functional RNA
Down
  1. 1. In biology, a mutation is an alteration in the nucleic acid sequence of the genome of an organism, virus, or extrachromosomal DNA
  2. 4. In biology, evolution is the change in heritable characteristics of biological populations over successive generations.
  3. 6. Deoxyribonucleic acid is a polymer composed of two polynucleotide chains that coil around each other to form a double helix