Class 12

The process of sexual reproduction begins with the union of a sperm and an egg, which is known as fertilisation. This can happen either inside (internal fertilisation) or outside (external fertilisation) the female’s body. Human reproduction exemplifies the former, while seahorse reproduction exemplifies the latter. External fertilisation is a procedure that happens outside of an […]

When we think of organisms mating, we often think of animals close to us, such as humans, dogs, dragonflies, cats, lizards, or birds. When these animals mate, the egg and sperm meet inside the body rather than outside in the air or water. Internal fertilisation evolved as a result of the transition to land, because

Reproduction refers to the process of producing offspring of the same kinds of species. This process ensures the continuity of species generation after generation. Furthermore, reproduction is divided into asexual and sexual reproduction. In asexual reproduction presence of one parent. Whereas sexual reproduction is a mode of reproduction in which there is an involvement of

The biological process of producing a new individual or offspring is known as reproduction. When conditions are favourable, this process assures that the number of individuals in a species increases. It is a vital life process and one of the fundamental properties of living beings. Reproduction Types There are primarily two types of reproduction: asexual

You dive into the sea along a coral reef. You notice gorgeous corals that are vibrantly coloured and alive. However, you realise that these creatures do not move. How do non-moving animals find a mate? They achieve this by discharging eggs or sperm into the water in the hopes that the cells will pair and

The merging of an egg and sperm cell inside the female body during sexual reproduction is known as internal fertilisation. External fertilisation offers the male more control over reproduction, whereas internal fertilisation gives the female more power. There must be a way for the male to deliver sperm into the female’s reproductive system for internal

The ability to reproduce is a fundamental feature of living organisms. Bacteria and fungi have the ability to divide and produce daughter cells which are identical to their parents. Sexually reproducing organisms have progeny that are genetically identical to them. The Enzymes used in Replication are discussed in this article. DNA Replication DNA replication is a multistep

Introduction Copying of DNA is a process in which a molecule of DNA makes two identical copies of itself inside a reproductive cell. The process through which DNA creates multiple copies of itself is known as replication. Initiation, elongation, and termination are three steps of biological polymerization.The complete cycle is carried out with the help

The zygote is formed inside the seed after an egg cell is fertilised by a sperm cell. The development process goes through histodifferentiation, cell growth, and maturation drying in the order described above. It is characterised by the differentiation of the endosperm and the embryo at the stage of histodifferentiation (sometimes referred to as embryogenesis).

Introduction In the course of DNA replication, a single strand of DNA duplicates itself several times. It is a type of biological polymerisation that occurs in three stages: initiation, elongation, and termination, in that order. It is a reaction that is catalysed by an enzyme. When it comes to DNA replication, DNA Polymerase is the