Free pdf download of cbse biology multiple choice questions for class 12 with answers chapter 6 molecular basis of inheritance.
What is satellite dna name their types mention the basis for classification of satellite dna.
Dna is a long polymer made from repeating units called nucleotides each of which is usually symbolized by a single letter.
A genetic marker may be a short dna sequence such as a sequence surrounding a single base pair change single nucleotide polymorphism.
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Definition of dna markers 2.
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Dna duplex model proposed by watson and crick is right handed spiral and is called b dna balanced dna.
Definition of dna markers.
Dna polymorphisms are arbitrarily defined as variations in a segment of dna that are found in gt 1 of the population.
Any genetic element locus allele dna sequence or chromosome feature which can be readily.
Another right handed duplex model is a dna alternate dna.
The following are some of the main applications of dna fingerprinting dna fingerprinting i.
A genetic marker is a gene or dna sequence with a known location on a chromosome that can be used to identify individuals or species it can be described as a variation which may arise due to mutation or alteration in the genomic loci that can be observed.
Figure 1 6 useful dna polymorphisms in molecular medicine see also figure 3 2.
Here a single turn of helix has 11 base pairs.
The structure of dna is dynamic along its length being capable of coiling into tight loops and other shapes.
The satellite navigation or satnav system is the system that offers autonomous geo spatial positioning it helps small electronic receivers to determine their location longitude latitude and altitude elevation to high precision using time signals transmitted along a line of sight by radio from the satellites.
Applications of dna fingerprinting dna fingerprinting finds its applications in various medical tests investigations forensic laboratory and many more.
Properties of dna marker 3.
Those characters which can be easily identified are called marker characters.
Either a t c or g.
A satellite is a moon planet or machine that orbits a planet or star.
Satellite dna consists of very large arrays of tandemly repeating non coding dna satellite dna is the main component of functional centromeres and form the main structural constituent of heterochromatin.
In this article we will discuss about 1.
Gnss is used to pinpoint the geographic location of the user s receiver.
The name satellite dna refers to the phenomenon that repetitions of a short dna sequence tend to produce a different frequency of the bases adenine cytosine guanine and thymine and.
This variation can be in fragment size or dna sequence.
Is an rflp restriction fragment length polymorphism present at a single locus and producing two polymorphic bands large and.
