Across
- 5. An event that drastically reduces population size and genetic variation, like when a whole breed is started from just a few dogs.
- 7. The type of selection that shifts a physical trait toward one extreme, like breeding dogs to become exclusively white over generations.
- 8. The type of allele that is usually hidden, but could cause genetic diseases when a puppy inherits a copy from both parents.
- 9. Selection driven entirely by human intervention rather than natural environmental survival.
- 10. As inbreeding increases, a dog is more likely to inherit two identical alleles for a trait, meaning its genotype becomes ________.
Down
- 1. The biological term for a specific version of a gene (like the version that codes for a white coat instead of a brown one).
- 2. Mating closely related individuals over multiple generations to fix a desired trait (like a pink nose) in the population.
- 3. In nature, the environment acts as this. But in selective breeding, humans act as the selection ________.
- 4. Inbreeding ________: The term for the decline in a population's overall fitness and fertility when the family tree is too restricted.
- 6. The complete set of all unique alleles in a population, which shrank significantly during the breed's domestication.
- 7. The congenital hearing impairment linked to the lack of pigment cells in the white Rajapalayam's inner ear.
