14.2 Breakage and reunion involves heteroduplex dna Branch migration describes the ability of a dna strand partially paired with its complement in a duplex to extend its pairing by displacing the resident strand with which it s homologous Hybrid DNA is another term for heteroduplex dna Recombinant joint is the point at which two recombining molecules of duplex dna are connected (the edge of the heteroduplex region) 消当
Branch migration describes the ability of a DNA strand partially paired with its complement in a duplex to extend its pairing by displacing the resident strand with which it is homologous. Hybrid DNA is another term for heteroduplex DNA. Recombinant joint is the point at which two recombining molecules of duplex DNA are connected (the edge of the heteroduplex region). 14.2 Breakage and reunion involves heteroduplex DNA
Progress through m eiosis M ole cular interact ion 14.2 Breakage and Leptotene M Each chrom osome has chrom somes become Sible, often Ba Oreplicated,andonsistsof 2 sister chromatids reunion involves etched to nuc A Mv heteroduplex dna Chromosom es begin AM Intiation pairing in lim ited Figure 14.1 Recombination occurs region or regions NN during the first meiotic prophase The stages of prophase are defined Pachytene by the appearance of the Synaptonem al /A Strand exchange complex extends vA Single strands exchange chromosomes. each of which along entire length of paired chromosomes A MVM consists of two replicas(sister chromatids), although the Chromosom es Nv Assimilation duplicated state becomes visible separate but are held Region of exchanged MM strands is extended only at the end. The molecular chiasmata 及 AA interactions of any individual crossing-over event involve two of Cibimoson AV Resolution the four duplex dnas condense. detach AWV from envelope chromatids become 消当
Figure 14.1 Recombination occurs during the first meiotic prophase. The stages of prophase are defined by the appearance of the chromosomes, each of which consists of two replicas (sister chromatids), although the duplicated state becomes visible only at the end. The molecular interactions of any individual crossing-over event involve two of the four duplex DNAs. 14.2 Breakage and reunion involves heteroduplex DNA
HHHHHHHHH 14.2 Breakage and DNA duplexes pair reunion involves HHHHHHH heteroduplex dna HHHH Broken strands exchange between duplexes Figure 14.2 Cro ssover point moves Recombination between Second nicks made in same strand Second nicks made in other strand two paired duplex dna HHHHHHH HHHHHHHHHHHHH HHHHHH could involve reciprocal single-strand exchange branch migration, and HHHHHHHHHHHHI exes, and nic年 nicki nnnnnn gnomes are not recombinant Reciprocal recombinant 消当 t contain heteroduplex region genomes are generated TLLLLHHHH
Figure 14.2 Recombination between two paired duplex DNAs could involve reciprocal single-strand exchange, branch migration, and nicking. 14.2 Breakage and reunion involves heteroduplex DNA
14.2 Breakage and reunion involves heteroduplex dna Figure 14. 3 Branch migration can occur in either direction when an unpaired single strand displaces a paired strand 消当
Figure 14.3 Branch migration can occur in either direction when an unpaired single strand displaces a paired strand. 14.2 Breakage and reunion involves heteroduplex DNA
14.2 Breakage and reunion involves Rotation shows structure heteroduplex dna of Holliday junction Figure 14.4 Resolution of a holliday junction can generate parental or recombinant duplexes depending on which Nic king controls out come strands are nicked. Both Nicks in other strand Nicks in same release splice strands recom binants release patch types of product have a (conventional recom binants region of heteroduplex DNA 某k 消当
Figure 14.4 Resolution of a Holliday junction can generate parental or recombinant duplexes, depending on which strands are nicked. Both types of product have a region of heteroduplex DNA. 14.2 Breakage and reunion involves heteroduplex DNA