Answer:
The correct option is A, since if the DNA enters in a circular form it is called a plasmid, and the plasmids upon entering the bacteria self-replicate outside the genetic structure, which gives the bacteria better survival qualities.
Explanation:
Plasmids are generally circular extrachromosomal DNA molecules that replicate and transmit independently of chromosomal DNA, and are normally present in bacteria, archaea, and sometimes in eukaryotic organisms such as yeast. Its size varies from 3 to 10 kb. The number of plasmids can vary, depending on their type, from a single copy to a few hundred per cell. Plasmid vectors allow cloning of exogenous DNA ligands of up to 4 kb since a larger size than this makes cloning in these vectors difficult. The term plasmid was first introduced by the American molecular biologist Joshua Lederberg in 1952. Plasmids can only coexist as one or more copies in each bacterium, due to cell division they can be lost in one of the secreted bacteria.
Answer:
The correct answer is (amino) met - lys – phe
Explanation:
3' G C C G A U G G A U G A A G U U U U A A A G U A A U A G C A A U G G A G G A C 5'
Write the mRNA in opposite or reverse order as 5' to 3' and then start with AUG codon.
Write the mRNA in revers order as 5’ to 3’ and starts with AUG codon.
5’-CAGGAGGUAACGAUAAUGAAAUUUUGAAGUAGGUAGCCG -3’
mRNA—5’AUG-AAA-UUU-UGA-AGUAGGUAGCCG -3’
Peptide: (amino) Met-Lys-Phe-STOP
Answer:
Pteridophytes are vascular plants but they do not produce flowers and seeds which mean their source of reproduction is unknown or hidden.
On the contrary, Spermatophytes as the name indicates, are seed bearing plants. They produced seeds and flowers. Examples are flowering plants, cactus, leather flower, buttercup and may more.
Explanation:
Dalton's theory of atoms are invisible was later proven false. An atom can be further divided into protons, neutrons, and electrons.
Hope this helps!
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