B. meiosis. This process randomly rearranges the pairs of homologous chromosomes in formation of the sex cells. In addition, there is crossing-over of the chromatids while the homologous chromosomes are synapsed during meiosis I.
It is very important to control the conditions of an experiment because FAILURE TO DO THIS WILL MAKE THE RESULTS OF THE EXPERIMENT INVALID.
A controlled experiment refers to an experiment that is conducted under controlled conditions. Conducting experiments under controlled conditions helps scientists to minimize the changes in all other variables with the exception of the ones been tested.
Answer:
Gravity is considered to be one of the universal forces inherent of nature itself. Gravity is an attractive force between objects, which is proportional to the mass of the objects and inversely proportional to the distance between them. Gravity is what help planets follow an elliptical orbit, and is the reason why we can keep our feet on the surface of the earth.
Answer: <u>Turgor pressure</u>
Explanation: Under normal condition, leaves of the plants are upright and rigid because of the turgor pressure. It is the pressure which is exerted by water inside the cell, towards the cell wall. This gives the leaf, a rigid structure. But when there is dehydration, this pressure decreases and the leaves loose their shape and wilt. There is absence of pressure from inner side of the cell wall.
