Answer:
The seeds collected from the first generation monohybrids are called F1. The first generation is called P generation or parental generation. The seeds collected from the first generation (P generation) is called F1 generation or the first filial generation. The seeds collected from the second generation (F1 generation) is called F2 generation or the second filial generation.
Explanation:
Answer:
Explanation: When the cell increases in size, the volume increases faster than the surface area, because volume is cubed where surface area is squared. When there is more volume and less surface area, diffusion takes longer and is less effective. ... this is actually why cells divide.
Explanation:
They form memory cells in which those cells remember the same pathogen for faster antibody production, in aid of future infections.
Answer:
当物体相互接触时，作用在物体上的力有六种：法向力、外加力、摩擦力、张力、弹簧力和阻力。这些力使物体改变它们的运动或运动，即从一个地方移动到另一个地方的行为。
