Molecular Markers: A Tool for Genetic Analysis

What is a molecular marker and how does it differ from a gene that shows a phenotype in an organism?

Choose true or false for the following statements: 1. A molecular marker is a gene that shows a phenotype in the organism. 2. Molecular markers can vary between individuals.

Answer:

A molecular marker is a gene or sequence on a chromosome that shows a phenotype in the organism. Molecular markers can vary between individuals.

A molecular marker is a gene or sequence on a chromosome that can be used to indirectly infer the presence of certain traits or genetic variations in an organism. Unlike genes that directly show phenotypes, molecular markers serve as tools for genetic analysis and mapping.

Molecular markers can vary between individuals, making them valuable for studying genetic diversity within a species. This variability allows researchers to identify unique genetic signatures that can be used for various applications, such as breeding programs or evolutionary studies.