2. Which is a better mode of reproduction: sexual or asexual? Why?
Among sexual and asexual reproduction, sexual reproduction is considered to be a better mode of reproduction. This is mainly because sexual reproduction tends to create more amount of variations among the organisms. It involves two parents who contribute 50% of their genomes each to the zygote. As a result of this, offsprings have father's characters, mother's characters and some other unique characters also. The variations caused by sexual reproduction are essential as they help organisms adjust to dynamic environmental conditions and are responsible for the survival and gradual evolution of species. On the contrary, in asexual reproduction, a single parent produces the offspring and thus, these offspring are similar to their parent. Due to this, they have no advantage over organisms produced by sexual reproduction. Thus, sexual reproduction is a better mode of reproduction than asexual reproduction.