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Genetics

Selected Works

1990

Articles 1 - 2 of 2

Full-Text Articles in Life Sciences

Nucleotide Sequence And Further Characterization Of The Synechococcus Sp. Strain Pcc 7002 Reca Gene: Complementation Of A Cyanobacterial Reca Mutation By The Escherichia Coli Reca Gene, R C. Murphy, G E. Gasparich, D A. Bryant, R D. Porter Jan 1990

Nucleotide Sequence And Further Characterization Of The Synechococcus Sp. Strain Pcc 7002 Reca Gene: Complementation Of A Cyanobacterial Reca Mutation By The Escherichia Coli Reca Gene, R C. Murphy, G E. Gasparich, D A. Bryant, R D. Porter

Gail Gasparich

The nucleotide sequence and transcript initiation site of the Synechococcus sp. strain PCC 7002 recA gene have been determined. The deduced amino acid sequence of the RecA protein of this cyanobacterium is 56% identical and 73% similar to the Escherichia coli RecA protein. Northern (RNA) blot analysis indicates that the Synechococcus strain PCC 7002 recA gene is transcribed as a monocistronic transcript 1,200 bases in length. The 5' endpoint of the recA mRNA was mapped by primer extension by using synthetic oligonucleotides of 17 and 27 nucleotides as primers. The nucleotide sequence 5' to the mapped endpoint contained sequence motifs …

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Genetics Of Interspecific Hybridization In The Triseriatus And Zoosophus Groups Of The Aedes (Protomacleaya) (Diptera: Culicidae)., David B. Taylor Dec 1989

Genetics Of Interspecific Hybridization In The Triseriatus And Zoosophus Groups Of The Aedes (Protomacleaya) (Diptera: Culicidae)., David B. Taylor

David B. Taylor

Interspecific hybridization was used to examine the genetics of species divergence and phylogeny of mosquitoes in the Triseriatus and Zoosophus groups of Aedes (Protomacleaya). Aedes zoosophus Dyar & Knab exhibited a relatively high degree of reproductive compatibility with Triseriatus group species. Crosses between A. zoosophus and A. triseriatus (Say) produced fertile female and sterile, intersex, male progeny. Crosses between A. zoosophus females and A. brelandi Zavortink males were sterile with no egg embryonation observed. Crosses between A. zoosophus males and A. brelandi females and reciprocal crosses between A. zoosophus and A. hendersoni (Cockerell) produced sterile, intersex female and …

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