OBJECTIVE LIFE SCIENCE
CELL BIOLOGY
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Alleles
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RNA
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Chromosomes
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Genes
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Detailed explanation-1: -In humans, the twenty-third pair is the sex chromosomes, while the first 22 pairs are called autosomes.
Detailed explanation-2: -Chromatid A chromatid is one of the two identical halves of a chromosome that has been replicated in preparation for cell division.
Detailed explanation-3: -Chromosomes are made up of a DNA-protein complex called chromatin that is organized into subunits called nucleosomes. The way in which eukaryotes compact and arrange their chromatin not only allows a large amount of DNA to fit in a small space, but it also helps regulate gene expression.
Detailed explanation-4: -One molecule of DNA and one protein make up one chromosome. Chromosomes are different sizes, and proteins called histones allow them to pack up small enough to fit in a nucleus.