Suppose no crossing - over takes place. explain why meiosis will still increase genetic variation

Meiosis will still increase genetic variation due to 2 rounds of independent assortment through the two rounds of cell division that occurs during meiosis.

Explanation:

During the lining up of homologous chromosomes/ chromosomes along the metaphase plane, the homologous chromosomes/ chromosomes are attached to spindle fibres on opposite poles of the cell and positioned along the metaphase plane to enter either daughter cell independently of one another. Hence this will result in the variation combination of sister chromatids/ chromosomes in the resulting daughter cells.

The correct answer will be option-False.

Explanation:

A scientific investigation is performed to answer and explain the natural phenomenon by following scientific method.

In the scientific method, a proposed hypothesis is proposed in such a way that it can explain the question to a limited extent as well as can be tested through experiments. The experiments provide the results on the basis of which conclusions are made.

It is not necessary that hypothesis will be always true as it is considered an educated guess based on the previous work.  The experiment is performed to test the hypothesis and not to verify the hypothesis that it is true.

Thus, option-false is the correct answer.