a closeup view of chromosome structure in genetics and molecular biology research detailed closeup of chromosome highlighting

chromosome close genetics dna biology science research cells genetic material microscopic double helix gene code molecular study structure human genome heredity disorders biotechnology medical engineering cytogenetics genomics variation karyotype biomedicine analysis cell division mitosis meiosis therapy testing genotypic phenotype replication expression nucleotide telomere centromere histone mapping chromosomal aberration mutation sequence sequencing inheritance trisomy