UNSTABLE DNA SEQUENCE
\ʌnstˈe͡ɪbə͡l dˌiːˌɛnˈe͡ɪ sˈiːkwəns], \ʌnstˈeɪbəl dˌiːˌɛnˈeɪ sˈiːkwəns], \ʌ_n_s_t_ˈeɪ_b_əl d_ˌiː__ˌɛ_n_ˈeɪ s_ˈiː_k_w_ə_n_s]\
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DNA region comprised of a variable number of repetitive, contiguous trinucleotide sequences. The presence of these regions is associated with diseases such as Fragile X Syndrome and MYOTONIC DYSTROPHY. Many chromosome fragile sites (CHROMOSOME FRAGILITY) contain expanded trinucleotide repeats.
By DataStellar Co., Ltd