OBJECTIVE LIFE SCIENCE
DEVELOPMENTAL BIOLOGY
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Centromere
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Chromatids
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Chromosomes
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Spindle Fibers
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Detailed explanation-1: -A chromosome is a condensed form of DNA. The DNA is tightly wound around histones which are proteins that help in the packaging of the DNA. In the nucleus, there is usually genetic material that is present. At the start of cell division, that is prophase, this chromatin material starts to condense and form chromosomes.
Detailed explanation-2: -This is accomplished by wrapping the DNA around structural histone proteins, which act as scaffolding for the DNA to be coiled around. The entire structure is called a nucleosome, each of which includes an octamer of histone proteins and 146 to 147 base pairs of DNA.
Detailed explanation-3: -Condensing DNA into chromosomes prevents DNA tangling and damage during cell division.