Artificial selection

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Across
  1. 4. The specific congenital defect linked to the homozygous recessive white-coat genes in this breed.
  2. 7. An increase in this genetic state (inheriting two identical alleles) allows hidden genetic diseases to be expressed.
  3. 8. The harmful (deleterious) type of allele that causes congenital deafness, which is usually masked in wild populations.
  4. 9. A severe reduction in the gene pool caused by breeding the modern population from only a few royal ancestors.
Down
  1. 1. Mating closely related dogs to maintain pure bloodlines, resulting in biological "depression" and reduced fitness.
  2. 2. In artificial selection, the human breeder replaces the natural environment as the selection ________.
  3. 3. The observable physical traits of the dog, such as the milky-white fur and pink nose.
  4. 4. This essential genetic characteristic is dangerously low in the Rajapalayam gene pool compared to local street dogs.
  5. 5. Type of selection where breeders shift the population's traits toward one extreme (e.g., exclusively white coats).
  6. 6. Humans selectively breed to increase the frequency of a specific ________ (an alternative version of a gene).