Lecture 6 - Lecture 6 - Transposons o Can send a copy of...

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Lecture 6 - Transposons o Can send a copy of themselves onto a plasmid o Jumping genes o Mobile elements o F factor is a plasmid which codes for its own replication but a transposon is just a tiny bit of DNA on the bacterial chromosome It also codes for its own replication and transfer Codes for an enzyme called transposase Transposon jumps from the bacterial chromosome to the plasmid in the cell (a.k.a. it sends a copy) This is the replicative movement of a transposon from one site to another An antibiotic resistance gene can be with the transposon and can move with it onto plasmids These plasmids can carry resistance by conjugation right into the recipient cell - Eukaryotes o Zygotes bring DNA from different parents into close proximity o Gametes recombine into a zygote o Homologous chromosomes carry the same genes, different alleles o Eukaryotic chromosomes are linear and large o Chromosomes pictured in karyotypes are in the metaphase stage of mitosis o Homologous pairs consist of 2 homologues, one from mom and one from dad o Homologues have the same size and shape
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Lecture 6 - Lecture 6 - Transposons o Can send a copy of...

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