Darwinism is a theory of biological evolution developed by the English naturalist Charles Darwin and others, stating that all species of organisms arise and develop through the natural selection of small, inherited variations that increase the individual’s ability to compete, survive, and reproduce. Darwinism states that populations evolve over the course of generations through a …
Lamarckism is a theory of evolution proposed by French biologist Jean-Baptiste Lamarck (1744–1829). It suggests that an organism can pass on characteristics that it acquired during its lifetime to its offspring. This is often referred to as the inheritance of acquired characteristics or soft inheritance. The theory was an attempt to explain the observed adaptation …
Evolution through theories : Lamarckism – സിദ്ധാന്തങ്ങളിലൂടെ പരിണാമം : ലാമാർക്കിസം Read More »
The geological time scale is a system used by geologists and other scientists to describe the timing and relationships between events that have occurred throughout Earth’s history. It divides Earth’s history into several periods of time, each with its own specific set of characteristics, including the formation of continents, major evolutionary changes, and mass extinctions. …
The Urey-Miller experiment was an experiment conducted by chemist Stanley Miller and physicist Harold Urey in 1953 that demonstrated the possibility of abiogenesis. Abiogenesis is the idea that life can come from non-living matter. The experiment was designed to simulate conditions on the early Earth and to see if the chemical components of life could …
Chemical evolution is the process by which the chemical composition of Earth’s atmosphere, oceans and soils has changed over time. It is thought to have begun shortly after the Earth formed, around 4.5 billion years ago, and has continued ever since. Chemical evolution can be divided into two distinct stages. The first stage is known …
DNA fingerprinting is a method of identifying an individual based on their unique DNA profile. It is used in a variety of fields, including forensics, paternity testing, and genetic ancestry testing. DNA fingerprinting can be used to identify an individual from a sample of blood, semen, saliva, skin, or other tissue. It can also be …
Scope of DNA finger printing – ഡിഎൻഎ ഫിംഗർ പ്രിന്റിംഗിന്റെ വ്യാപ്തി Read More »
DNA fingerprinting, also known as DNA profiling, is a process used to determine an individual’s identity through analysis of their DNA. It is used in a wide range of applications, from solving crimes to determining paternity.DNA fingerprinting is based on the idea that each person’s DNA is unique, except for identical twins. It involves extracting …
DNA testing involves taking a sample of an individual’s DNA (usually from a cheek swab or hair sample) and comparing it to a sample of known genetic material (such as a family member’s DNA). By comparing the two samples, scientists can match the DNA sequences and identify the individual.
Genetic modification is the process of altering an organism’s genetic make-up to give it desired characteristics. Genetically modified (GM) animals and crops have been created to promote a variety of traits such as disease resistance, increased yield, improved nutrition, and herbicide tolerance. GM animals are typically created through either the introduction of foreign genes or …
Genetically modified animals and crops – ജനിതകമാറ്റം വരുത്തിയ മൃഗങ്ങളും വിളകളും Read More »
The Human Genome Project (HGP) was an international scientific research project with the goal of determining the sequence of nucleotide base pairs that make up human DNA, and of identifying and mapping all of the genes of the human genome from both a physical and functional standpoint. It was coordinated by the U.S. Department of …