As per recent studies, it is revealed that the brain produces new cells (as many as 1500 new neurons every day in the dentate gyrus of the... View Article
For a material to be genetic material, it has to replicate, it must be stable both structurally and chemically stable. Furthermore, it must be... View Article
Blood type comprises two blood groups - Rh and ABO. The types are on the basis of antigens found on the surface of your blood cells. The ABO... View Article
Genome is the genetic constituency of an entity. It comprises DNA (in some viruses, the RNA), genes and other components which govern the... View Article
DNA (Deoxyribonucleic acid) are nucleic acids containing genetic information for functioning and development of living entities. All known... View Article
It is not possible for two 'unmixed' parents having straight-hair to reproduce an offspring with curly hair. Having said that, two parents,... View Article
Operon consists of many structural genes, which are regulated by a single promoter, an operator and repressor. An operon is made up of three main... View Article
Genetic variation is caused due to mutation and recombination at the time of meiosis. Random mating and fertilisation also causes genetic... View Article
The DNA is genetic material, which carries genetic information. It is associated with histone proteins and packaged inside the nucleus as... View Article
Lactose acts as an inducer of lac operon because it binds to the repressor protein and prevents it from binding to the operator. In absence of an... View Article
Yes, genetic code is a triplet having a trinucleotide sequence. Genetic code deciphers the 20 amino acids present in proteins in the language of... View Article
Heredity refers to the passing on of traits from parents to offspring. Genes are the basic unit of heredity. Genes are present on DNA and are... View Article
Inbreeding refers to the mating of closely related animals of the same breed. Inbreeding helps in the accumulation of superior genes and... View Article
Codon is a trinucleotide sequence present on DNA and complementary sequence present on mRNA transcript, which codes for a specific amino acid at... View Article
According to Darwin, natural selection is the mechanism by which evolution occurs over time. Heritable traits, which make an individual better... View Article
Lactose is a substrate for beta-galactosidase enzyme as well as acts as an inducer for lac operon. As an inducer, it inactivates repressor by its... View Article
XXY syndrome is also referred to as Klinefelter syndrome. Here males are born with an extra X chromosome. It usually occurs due to nondisjunction... View Article
Codominance is the condition where both alleles are equally expressed in a phenotype. ABO blood group inheritance shows codominance. The gene... View Article
Humans first evolved from Africa. Early hominids existed around 3-5 mya and modern humans or Homo sapiens evolved around 200,000 years ago in... View Article
A recent example of human evolution is the resistance to malaria disease. The deformed RBCs in the sickle cell anaemia are less prone to... View Article
