What is an allele? Do all genes come in only one form such that every plant that has that gene has exactly the same nucleotide sequence? Look at the gene in FIGURE 16-26. How do the various alleles differ from each other?

FIGURE 16-26

Transcribed Image Text:

AGCACCCTCCCACCTCATCCCACCGTTGTGATGTCAATCCAACGTCGCATCTCCAGGGTCTCG GCCACAGCTCTGACCCAGCCCGCCAAACCACCGGTCCAATCTCTCGGCCACGTCACCGATCCG CGGATCGACCCAGCGAAGTCCCTCCCGCCCOCAAAGTCCOCCAAATCTTGCAGTTCCCTCCTA COOCATCTCTCCCCCOGATCGCCGTCTCGACCOTCCACTCCATCCGCATCCAACGGCAGCCAC AATCCTCCCCATATAAACCAACCCCCCGCCCTCAGATCCCTAATCCCATOGCAAGCATCAGAC ACGCCTCCTCCAACCTCTCGACCCCTTTAAGACGCCCTTCGCCCCACCCAGCAAAT CACAGCA +50 AAG CGG CAC CGG --C Lys Arg His TCCCTCCAAAGCAGGCAGCAGOTCCTCTTCTTCCTAATCACACTATCTCGGAGAGGAGCGGCC CCAGACGCCACCCACCACCGTTCCTCCCATOCCACACTCGCTCGCAGOTOGAGATOGTOGGCC Pro Ala lle -50 +1 ATG TCT GGG CGC GAC AAG GGC GGC AAG GGG CTG GGC AAG GGC GGC GCC --C--A --C -G- -- A Ser Gly Arg Asp Lys Gly Gly Lys Gly Leu Gly Lys Gly Gly Ala Gly www Arg Lys +100 CCG GCG ATC CGG AGG CTG GCC AGG AGG GGC GGC --G C- C-- Ala Arg Arg Gly Gly Val *** Thr Val Thr Thr AAG GTC CTC CGC Lou Arg +350 ... C.- Arg Arg Leu lle Tyr Glu Val -100 +150 GGC CTC ATC TAC GAG GAG ACC CGC GGC GTC CTC AAG ATC TTC CTC GAG ..G --G ww. ... Gly Leu Arg Gly Val Leu Lys lle Phe Leu Glu ... *** +200 AAC GTC ATC CGC GAC GCC GTC ACC TAC Asn Val lle Ala Glu -- --T Arg Asp Ala Val -150 Thr ... -200 GAC AAC ATC CAG GGC ATC ACC AAG ..T Asp Asn lle Gin Gly llo Thr Lys +250 ACC GTC ACC GCC ATG GAC GTC GTC TAC GCG CTC AAG CGC CAG GGC CGC ➖➖➖ +300 ACC CTC TAC GGC TTC GGA GGC TAG ..C Leu Tyr Gly Phe Gly Gly The Tyr Thr Glu *** GTG AAG CGC ATC TCC G Lys Arg lle Ser ACC GAG CAC GCC His Ala ... ... CGC CGC AAA --G Arg Arg Lys *** Met Asp Val Val Tyr Ala Leu Lys Arg Gln Gly Arg ... ATTTGTGTGGTGAAGCAACTTCCTCGTTTGC --A GGGCCGGCCGGCCGACGGGAGTCACTCTTTG +400 TCTGTGATOTGTGCTGTCGTAGATGAGATTTACT GATTTGGCGTGCGCCGGTTGTATTCTGTC TCGCCGCOTGCAGATTCCAGAAGCCTGATGAAGCCCCGACTTGTTTAGTTCGCTATTTCCTCT