BOTANY

BOTANY

PLANT GENETICS

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
What is a Molecular marker?
A
Are used to select a plant for a specific trait if it has a desirable gene in its DNA
B
Are used to highlight an important piece of information on a book
C
are used to select a plant for a specific group of cells
D
None of the above
Explanation: 

Detailed explanation-1: -RFLP markers: RFLP markers are the first generation of DNA markers and one of the important tools for plant genome mapping.

Detailed explanation-2: -DNA (or molecular) markers a type of genetic markers, which reveal sites of variation in DNA [1, 2]. Markers can be used to confirm the true identity of individual plants. The maintenance of high levels of genetic purity is essential in cereal hybrid production in order to exploit heterosis.

Detailed explanation-3: -In genetics, a molecular marker (identified as genetic marker) is a fragment of DNA that is associated with a certain location within the genome. Molecular markers are used in molecular biology and biotechnology to identify a particular sequence of DNA in a pool of unknown DNA.

Detailed explanation-4: -Random amplified polymorphic DNA (RAPD), simple sequence repeat (SSR), inter-simple sequence repeats (ISSR), and amplified fragment length polymorphism (AFLP) are the four most widely used molecular markers [11].

Detailed explanation-5: -Molecular or DNA marker techniques allow gene mappers to directly analyze DNA and observe allele differences as specific loci. A genetic marker is any gene that has been mapped. In our examples so far, alleles of the genes we map control phenotype differences we can see expressed in the organism.

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