Definition of Genes and Alleles In this interactive lecture, we’ll explore the key differences between genes and alleles. So, let’s begin by asking: “Is an allele a gene?” It’s a common question and can be confusing for students due to the similarity of these terms. However, understanding the distinction is crucial for grasping Mendelian Genetics. […]
Difference Between Genes and Alleles With Complete Explanation Read More »
Introduction When male and female gametes are fused, zygote formation takes place. Zygote is considered as a vital link that ensures the continuity of species generation after generation. Every sexually reproducing organisms including human beings start life as a single cell, called the zygote. After zygote formation, process of development of embryo takes place. During
Difference between Oviparous, Viviparous and Ovoviviparous Animals Read More »
Q1. Choose the correct answer among the following: Answers: Q2. Match column I and column II Column I Column II Bilirubin and biliverdin Parotid Hydrolysis of starch Bile Digestion of fat Lipases Salivary gland Amylases Answers: Column I Column II Bilirubin and biliverdin ii) Bile Hydrolysis of starch iv) Amylases Digestion of fat iii) Lipase
Chapter 16: Digestion and Absorption Read More »
Introduction to DNA Marker DNA marker as the name suggests is a sequence of DNA which is present at a specific site on DNA. In other words, DNA marker is that DNA sequence which has marked DNA and present in repetitive manner. For example, suppose there is a 15-20 nucleotide long sequence present on DNA
What is DNA Marker? Types of DNA Markers – Dominant and Co-dominant Markers Read More »
Mechanism of Aneuploidy Nondisjunction (the inability of homologous chromosomes at meiosis or sister chromatids at mitosis to separate equally to opposite poles) in mitosis or meiosis is the main cause of most aneuploids. Disjunction is the term used for the normal separation of chromatids to opposite poles during nuclear division or karyokinesis. Nondisjunction is simply
What is Aneuploidy and What is the Mechanism of Aneuploidy? Read More »
What is ELISA? ELISA stands for Enzyme Linked Immunosorbent Assay. It is a type of immunoassay used to identify either the antigen or antibody. This study antigens and antibodies — quantitative or qualitative analysis is done. Samples routinely used in ELISA include plasma, serum, cell lysates, tissue lysates, and cell culture, etc. What does quantitative
What is ELISA? Types of ELISA and Applications Read More »
What do you mean by Polymerase Chain Reaction? Polymerase chain reaction (PCR) is a molecular technique that is used to amplify specific segments of DNA for a wide range of molecular technology applications. This technique was developed by Kary Mullis and his coworkers in 1980s and received Nobel Prize for the same. PCR technique allows
What is Polymerase Chain Reaction (PCR)? Read More »
What is Gene Cloning? What do you mean by gene cloning? Gene means a segment of DNA that expresses for a particular protein. And cloning means making multiple copies. So, gene cloning means a technique used for making multiple copies of a gene. If we use PCR (Polymerase Chain Reaction) method for cloning genes then
Introduction to Gene Cloning and Steps of Gene Cloning Read More »
What is Northern Blotting? Northern blotting technique in molecular biology is used to detect RNA in a cell. We can also say that to analyze the gene expression in a cell – Northern blotting technique is used. What do we mean by gene expression? As we know that a cell contains nucleus and inside the
Northern Blotting: How and Why Northern Blotting is Performed? Read More »
What is Southern Blotting? What is Southern Blotting? Why and how it is done? First of all, we need to understand the word “Southern” – well, this word has come after the name of the scientist Edward M Southern who first developed this Southern Blotting technique at Edinburgh University, United Kingdom in the 1970s. Now,
Southern Blotting: Technique, Procedure and Applications Read More »
