How do genes and chromosomes share similarity from the point of view of genitical studies?

A scientist investigating the genome of two related individuals observes a difference of a few nucleotides in one individual compared to the other. The nucleotide differences are in a region of noncoding DNA on chromosome 1. Would these differences be considered a mutation? Why or why not? Yes, the difference in nucleotide sequences between the individuals is a mutation because it will affect the phenotype of the two individuals. Yes, any heritable variation in the nucleotide sequence is considered a mutation, even if that variation is in a noncoding region of DNA. Not enough information was provided to determine if this nucleotide difference is a mutation because the effect on phenotype is unknown. No, the change in nucleotide sequence doesn't appear in a coding region of the DNA and so can't be a mutation.

How is it possible for humans to differ genetically from each other if we all have the same genes arranged in the same order on our chromosomes?

What is it that forms the basis of DNA fingerprinting?

How to Identify structural sequences, such as telomericsequences, in chromosomes ?

Genes A and B are 7.5 map units apart on one chromosome. Genes C and D are 8.0 map units apart on a second non-homologous chromosome. • The recombination frequency between A and B is? • The recombination frequency between A and C is? • The recombination frequency between C and D is? • The recombination frequency between B and D is?