PATHOLOGY MCQ
GENETICS AND DISEASE
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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a heritable factor that consists of a length of DNA and influences many characteristics
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a heritable factor that consists of a length of mRNA and influences many characteristics
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a heritable factor that consists of a length of DNA and influences a specific characteristic
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a heritable factor that consists of a length of mRNA and influences a specific characteristic
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Detailed explanation-1: -Definition of a gene is, “a heritable factor that consists of a length of DNA and influences a specific charact eristic.” A gene locus is, “the specific position of a gene on a chromosome.” Alleles are, “The various specific forms of a gene which differ from each other by one or only a few bases".
Detailed explanation-2: -A gene is a heritable factor that consists of a length of DNA and influences a specific characteristic. A gene occupies a specific position on a chromosome.
Detailed explanation-3: -A sequence of DNA that encodes a product like an RNA or a protein.
Detailed explanation-4: -Chromosomes are structures within cells that contain a person’s genes. Genes are contained in chromosomes, which are in the cell nucleus.
Detailed explanation-5: -Definition. A mutation is a change in the DNA sequence of an organism.