SCIENCE
ZOOLOGY
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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A nucleus like structure
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Nucleoid with histone protein
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A nucleus with condensed chromosome
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A nucleoid with distinct chromosome
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Detailed explanation-1: -Mesokaryon is a nucleus with a condensed chromosome. It is composed of ‘meso’ and ‘karyon’ which means ‘middle’ and ‘nucleus’ respectively. It is a special type of nucleus found only in dinoflagellates which consist of condensed chromosomes.
Detailed explanation-2: -So, the correct answer is ‘Dinoflagellates’
Detailed explanation-3: -Mesokaryotes are the organisms that were used to be considered in between the nucleoid of the prokaryotes and the nucleus of the eukaryotes and their nucleus do not contain histones proteins instead a new family of proteins called viral nucleoproteins.
Detailed explanation-4: -A single nucleosome consists of about 150 base pairs of DNA sequence wrapped around a core of histone proteins. In forming a chromosome, the nucleosomes repeatedly fold in on themselves to tighten and condense the packaged DNA.
Detailed explanation-5: -In contrast, in eukaryotes, all of the cell’s chromosomes are stored inside a structure called the nucleus. Each eukaryotic chromosome is composed of DNA coiled and condensed around nuclear proteins called histones.