PATHOLOGY MCQ
GENETICS AND DISEASE
Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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a piece of DNA
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a chromosome
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all of your cells
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all of your DNA
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Detailed explanation-1: -The nuclear genome comprises approximately 3 200 000 000 nucleotides of DNA, divided into 24 linear molecules, the shortest 50 000 000 nucleotides in length and the longest 260 000 000 nucleotides, each contained in a different chromosome.
Detailed explanation-2: -The genome is the entire set of DNA instructions found in a cell. In humans, the genome consists of 23 pairs of chromosomes located in the cell’s nucleus, as well as a small chromosome in the cell’s mitochondria. A genome contains all the information needed for an individual to develop and function.
Detailed explanation-3: -human genome, all of the approximately three billion base pairs of deoxyribonucleic acid (DNA) that make up the entire set of chromosomes of the human organism.
Detailed explanation-4: -Definition. ACGT is an acronym for the four types of bases found in a DNA molecule: adenine (A), cytosine (C), guanine (G), and thymine (T). A DNA molecule consists of two strands wound around each other, with each strand held together by bonds between the bases.
Detailed explanation-5: -The human genome contains roughly 3 billion nucleotides and just under 20, 000 protein-coding genes – an estimated 1% of the genome’s total length. The remaining 99% is non-coding DNA sequences that don’t produce proteins.