Question

As compared to mitosis, meiosis has
A. No telophase
B. Exchange of chromatid segments
C. Duplication of chromosomes during anaphase
D. Daughter cells similar to parent cells

Answer 1

The major events in our life are going in our bodies every day, every hour, and every second. The new cells are formed when the cells divide. We get two cells from one single cell and these two newly formed cells will divide again to form four cells and so on. We call this process cell reproduction or cell division because for every new cell formed the old cell has to divide.

Complete answer: Telophase- In mitosis telophase is the final step where it separates the duplicated genetic material of the parents and they are divided into two identical daughter cells. In meiosis, telophase occurs twice. Once the duplicated, paired chromosomes have been pulled to the opposite sides of the poles the telophase will occur. During telophase, a nuclear envelope is formed around each set of chromosomes.
Exchange of chromatid segments- The exchange of chromatid segments is usually the exchange of genetic material during sexual reproduction which occurs between the two non-sister chromatids which will result in recombinant chromosomes. This will occur in the pachytene stage of meiosis.
Duplication of chromosomes during anaphase- The fourth phase of mitosis is anaphase in which the separation of duplicated genetic material occurs.
Daughter cells similar to parent cells- In mitosis there are two daughter cells formed and they are identical to their parent cells but whereas in meiosis there are four daughter cells formed and they are not identical because of the exchange of chromatid segments in the pachytene stage.
Hence the answer is option B which is the Exchange of chromatid segments.

Note: In all somatic cells mitosis occurs. The importance of mitosis in an organism is for growth and there is no exchange of genetic information occurs whereas in meiosis the chromosomes of the parental cell are halved and they produce four gametes so they are called reductional divisions. Meiosis occurs only in the germ cells. The crossover of genetic information occurs in prophase 1 and this crossover is called synapsis and is responsible for variations in the offspring.