Class 12

When you look at the protista kingdom, you might assume you’ve been transported to a foreign place full of odd creatures. Oh, the algae, amoebas, and slime molds! Despite the fact that they are all members of the same kingdom, these species have little in common. They have distinct appearances, move in different ways, and […]

Introduction Recombination is the process of breaking and recombining fragments of DNA to create new allele combinations. This recombination process results in genetic variation at the gene level, reflecting changes in DNA sequences between species. Recombination The ability of organisms to adapt to their surroundings and keep their DNA sequence in cells from generation to

Introduction The maturation phase is preceded by meiotic division. The main oocyte’s maturation division differs substantially from the spermatocyte’s maturation division. The cytoplasm of the oocyte divides unequally after meiotic division of the nucleus to generate a single big haploid egg and three little haploid polar bodies or polocytes at the end. This kind of

Every plant, as well as some algae, has a gametophyte in its life cycle. It is one of the generation alternation phases. Sporophyte, or multicellular diploid generation, and Gametophyte, or haploid generation, are the two alternating phases. Bisexual gametophytes are gametophytes that have both male and female organs. Unisexual gametophytes are gametophytes with only one

Living organisms make certain that they are able to reproduce in order to maintain their existence on the planet. Reproduction can take place in either an asexual or a sexual manner. When it comes to sexual reproduction and asexual reproduction, there is a considerable difference between both. When compared to the asexual form of reproduction,

A cell replicates its DNA during binary fission and separates into two daughter cells. After mitosis, each cell has a copy of the parent DNA. For example, amoeba, bacteria and most single-celled creatures follow this mechanism. Binary Fission Binary fission is how prokaryotes like E. coli and Archaea and eukaryotes like Euglena reproduce. Binary fission

Sexually transmitted diseases, commonly known as STDs, are transmitted through sexual intercourse. Apart from sexual activities, STDs can also be transferred in several other ways, such as sharing infected needles, breastfeeding, etc. To prevent these diseases, the masses need to be aware of them; hence the government is taking many steps to spread awareness.  List

All organisms live within a specific physical and biological environment. Their structure and feeding habits are inseparably associated with their surroundings and the surroundings of an organism represent its environment.  A population is a group of organisms of the same species that inhabit a geographical area at a given, share or compete for similar resources,

‘Poly’ means many and “embryony” means embryo. This property is not only limited to plants showing more features of polyembryony than animals as this helps them in the process of reproduction. Understanding Polyembryony, its types, occurrences, and significance will be easier if you read and understand this article. Plants and Polyembryony It was Antoni van

Have you ever wondered why identical twins are born or why identical twins are identical? Polyembryony is the mechanism by which humans are able to produce identical twins. ‘Poly’ means many and “embryony” means embryo. Understanding Polyembryony, its types, occurrences, and significance will be easier if you read and understand this article. What is Polyembryony