BOTANY
BIOTECHNOLOGY
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Nearly identical genes are found in a wide variety of organisms.
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Genes are only found in humans.
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Genes are found in all living organisms, but humans do not share genes with other organisms
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Genes in all mammals are identical
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Detailed explanation-1: -Answer and Explanation: The correct answer to this question is B. They always cause a change to an organism’s genotype. Regardless of the cause of the change, a DNA sequence is always altered when it mutates.
Detailed explanation-2: -In humans, alleles of particular genes come in pairs, one on each chromosome? (we have 23 pairs of chromosomes). If the alleles of a particular gene are the same, the organism is described as homozygous? for that gene.
Detailed explanation-3: -Each variation of a gene is called an allele (pronounced ‘AL-eel’). These two copies of the gene contained in your chromosomes influence the way your cells work. The two alleles in a gene pair are inherited, one from each parent. Alleles interact with each other in different ways.
Detailed explanation-4: -(b) Genes are fragments of DNA.