Answer:
Directional selection; stabilizing selection
Explanation:
- The stabilizing selection is a result of the decrease of the population and causes genetic variation due to the natural selection.
- The directional selection of the genetic variation shifts to a new phenotype and on exposure to the environmental changes and both of these can lead to the natural selection and contribute to the variation of the population.
Huntington's disease (HD) is a revolutionary mind sickness caused by a faulty gene. This sickness reasons changes within the relevant location of the brain, which affect motion, temper, and thinking abilities.
Huntington's ailment (HD) is a deadly genetic disorder that reasons the progressive breakdown of nerve cells inside the brain. It deteriorates a person's bodily and mental skills usually throughout their top running years and has no cure.
Huntington's disorder is because of a mutation inside the gene for a protein referred to as huntingtin. The illness reasons the cytosine, adenine, and guanine (CAG) building blocks of DNA to repeat many greater instances than is normal. every child of a discern with HD has a 50-50 danger of inheriting the HD gene.
Learn more about Huntington's disorder here:
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