Alleles i think. i learned this like yesterday lol
Certain elements are required in large quantities, and others are required in small amounts by the body, but both are essential for the survival of the cells. The cells which are required in large amounts are called as macronutrients, while the ones required in small quantities are called as micronutrients, or trace elements.
Hence, the answer is trace elements or micronutrients.
It is a reduction of number of cells of their parent cell in half equal numbers.
Observations are used with observing, forming a hypothesis, and analyzing data.
