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Mutations and genetic recombination (in sexually reproducing organisms) are major sources of variations in natural populations, In this section we will briefly mention the various types of mutations, their rates and how they are caused.
The term mutation is used to designate the process by which changes arise in the genetic material and, the end products of such processes. Mritations form a separate category of sources of variability, distinct' from variability arising from genetic recombination or independent assortment of chromosomes, characteristic of sexually reproducing individuals. There are two categories of mutations. '(1) Chromosomal mutations which affect the'number of chromosomes and the number or the arrangement of gencs in a chromosome; (2) gene mutations which affect only one or a few nucleotides in a gcne. We shall now tiiscuss these two aspects of mutaion.
An increase in the calcium conductance of all sarcoplasmic reticulum membranes of a skeletal muscle with no external forces on it leads to A. an increase in the amount of calci
Signs and Symptoms Decreased urine output Bloody or brown colour urine Edema Malaise Mild headache Gastrointestinal disturbances
Factors affecting the process of deep fat frying. The common factors influencing the process of deep frying include: 1. Heat- Frying temperatures ranging from 150 -190°C
Q. What is Osseointegration in macroscopic biomechanical? A fixture is osseointegrated if there is no progressive relative motion between the fixture and surrounding living bon
How do cells obtain energy for their functioning? Cells obtain energy for their metabolic reactions from the breaking of organic molecules with high energetic content. This ene
Q. Can solutions with the same concentration of diverse solutes have different osmotic pressures? The osmotic pressure of a solution does not depend on the nature of the solute
Contig: Number of uses, all nouns. The term comes from the shortening of the word 'contiguous'. A 'contig' might refer to the map showing placement of a set of clones which comple
Q. Explain the Bone Implant Interface? Three phases have been described in the development of bone implant interface. 1. Stabilization phase Subendosteal and subperiost
Salmonellosis in poultry A wide variety of serovars are prevalent among chicken, turkeys, ducks and geese. The poultry is an important reservoir of salmonellae. The common dise
Explain the term 'health' Mention any two ways of maintaining it. Why does a doctor administer tetanus antitoxin and not a tetanus vaccine to a child Injured in a roadside acci
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