Final answer:
It is false that two haplophase cells of opposite mating types may not fuse to form one diplophase cell; they can fuse to form a diploid cell. Haplophase cells, or haploid cells, from sexually reproducing organisms can combine their genetic material during fertilization, leading to greater genetic diversity.
Step-by-step explanation:
The statement that two haplophase cells of opposite mating types may not fuse to form one diplophase cell is false. In biology, especially in the context of sexual reproduction and cell division, haplophase cells, also known as haploid cells, are capable of fusing if they are of opposite mating types to form a diplophase, or diploid cell, where the genetic material from both cells combines to form a cell with two complete sets of chromosomes.
During the process of meiosis, a single diploid cell divides to produce four genetically unique haploid cells. These haploid cells can participate in sexual reproduction by fusing with another haploid cell of the opposite mating type to form a new diploid organism. This process is crucial for the genetic diversity of sexually reproducing populations.
In summary, human sperms are indeed haploid. Sister chromatids separate from each other during meiosis II, not meiosis I. After a single cell goes through meiosis, four cells are produced. And, telophase II is the stage in meiosis where chromosomes arrive at opposite poles, begin to decondense, nuclear envelopes form around the chromosomes, and cytokinesis follows to separate the cells.