Satellite DNA is important because it

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codes for enzymes needed for DNA replication

shows high degree of polymorphism in population and also the same degree of polymorphism in an individual, which is heritable from parents to children

does not code for proteins and is same in all members of the population

codes for proteins needed in cell cycle

answer is D.

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Detailed Solution

Satellite DNA shows high degree of polymorphism and forms the basis of DNA fingerprinting. DNA from every tissue from an individual shows the same degree of polymorphism. It is a very useful identification tool in forensic applications. Polymorphisms are inheritable and form the basis of paternity testing.
Satellite DNA shows high degree of polymorphism in population and also the same degree of polymorphism in an individual, which is heritable from parents to children.
If an inheritable mutation is observed in a population at high frequency (>0.01), it is referred to as DNA polymorphism. There is a variety of different types of polymorphisms ranging from single nucleotide change to
Very large-scale changes. Polymorphisms play a very important role in evolution and speciation.
(1) Satellite shows variations among individuals of a population.
(2) Satellite DNA does not code for enzymes needed for DNA replication. Satellite DNA is non-coding DNA. It can play a role in the organization and structure of the chromosome.
(3) Satellite DNA does not code for proteins needed in cell cycle.

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