The HTT mutation that causes the Huntington's Disease involves a DNA segment otherwise known as a CAG trinucleotide repeat.
Answer:
C. It offers an explanation of specific relationships under given conditions.
Explanation:
We base scientific laws on our observations of phenomena that happen in nature. We explain these phenomena with valid arguments without arguments that can refute these arguments. When there is a law established in science it describes an unalterable and constant relationship between variables.
Answer:
The decrease in the amount of daylight in winter causes a change in gene expression, which results in foxes growing a lighter - appearing coat.
Explanation:
With less quantity of sunlight during winter days, the arctic fox is not able to produce melanin, the natural pigment that changes the hair color into brownish color. In summer days, is the opposite effect, in this way, the hair of the fox turns into brown - gray color.
Answer:
C
Explanation:
Acidic soils mean they have more of Al3+ and H+ ions which are acid forming cations. These cations make alkaline forming ions unavailable to plants as nutrients. When the pH of the soil is raised, the Al3+, Fe3+, and H+ are neutralized. The ions bind with –OH ions hence releasing the ions in the negatively-charged sites on the hummus to play a role in the nutrient exchange.
