Transformation of cell
rubabTransformation is the genetic alteration of a cell resulting from the introduction, uptake and expression of foreign genetic material (DNA or RNA). In 1928 Frederick Griffith transforms nonpathogenic pneumococcus bacteria…
Flagellated Protozoa life cycle and different Pseudopodia
saadiaTHE FLAGELLATED PROTOZOA 1. Flagellated protozoan possess flagella for locomotion. The flagellapush or pull the protozoans through aquatic medium. Flagella may produce two-dimension: Whip like movements and helical movements. 2.…
TRANSDUCTION
Transduction is the process by which bacterial DNA is moved from one bacterium to another by a virus. It was first discovered by Joshua Lederberg in 1952. The most striking…
MOLECULAR GENETICS:.U1=m711,LITE CELLULAR CONTRO4
abidaDNA: THE GENETIC MATERIAL The biologists of twentieth century realized that the genetic material must have certain characteristics. These charabteristics can explain the properties of life: 1: First, the genetic…
CONJUGATION & GENE RECOMBINATION IN E.COLI
The transfer of genetic material between bacteria through cell-to-cell contact is called bacterial conjugation. It is a mechanism of horizontal gene transfer. Bacterial conjugation is often incorrectly regarded as sexual…
OBJECTIVES OF CHROMOSOME AND GENE LINKAGE
Multiple Choice Questions MCQs Four options are given at the end of each statement. You should encircle one option from them. Which of the followings is linker protein? (a) H1 …
MODEL SUBJECTIVE QUESTION OF CHROMOSOME AND GENE LINKAGE
Write note on eukaryotic chromosomes. Write note on sex chromosomes and autosomes. Discuss linkage relationships. Write note crossing over. Write note on point mutation Discuss aneuploidy and polyploidy. Discuss changes…
DEFINITIONS AND KEY POINTS OF CHROMOSOME AND GENE LINKAGE
TERMS DEFINITIONS Cell cycle The highly dispersed state of chromosomes is called chromatin. Mitosis The highly folded form during division of cell is called Nucleosothe Four types of Histone protein…
Protozoan Taxonomy & Classification
PROTOZOAN TAXONOMY Zoologists who specialize in the study of protozoa are called proto-zoologists. The protests base diversity of ultrastructure, life cycle, mitochondria, DNA sequence data, life styles and evolutionary lineages.…
CHANGE IN CHROMOSOMAL STRUCTURE AND NUMB
Physical and chemical disturbance and errors occur during meiosis. They damage chromosome or alter their number in a cell. There can be folloyn chromosomal alterations: Point mutation The change of…