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Biology A Crossword Puzzle Chapter 9

Horizontales
A sequence present in protein-coding mRNA after completion of pre-mRNA splicing
An enzyme that contains a catalytic part and an inbuilt RNA template; it functions to maintain telomeres at chromosome ends
A short stretch of RNA nucleotides that is required to initiate replication and allow DNA polymerase to bind and being replication
A five-carbon sugar molecule with a hydrogen atom rather than a hydroxyl group in the 2' position; the sugar component of DNA nucleotides
During replicatoin of the 3' to 5' strand, the strand that is replicated in short fragments and away from the replication fork
A permanent variation in the nucleotide sequence of a genome
A nitrogen-containing molecule that acts as a base; often referring to one of the purine or pyrimidine components of nucleic acids
An enzyme that helps to open up the DNA helix during DNA replication by breaking the hydrogen bonds
Process that control wether a gene is expressed
The DNA at the end of linear chromosomes
Verticales
Three consecutive nucleotides in mRNA that specify the addition of a specific amino acid or the release of a polypeptide chain during translation
Messanger RNA; form of RNA that carries the nucleotide sequence code for a protein sequence that is translated into a polypeptide sequence
The amino acids that correspond to three-nucleotide codons of mRNA
The DNA fragments that are synthesized in short stretches on the lagging strand
Non-protein-coding intervening sequences that are spliced from mRNA during processing
A form of DNA repair in which non-complementary nucleotides are recognized, excised, and replaced with correct nucleotides
The strand that is synthesized continuously in the 5' to 3' direction that is synthesized in the direction of the replication fork
The process of removing introns and reconnecting exons in a pre-mRNA
Describing non-genetic regulatory factors, such as changes in modifications to histone proteins and DNA that control accessibility to genes in chromosomes
A sequence on DNA to which RNA polymerase and associated factors bind and initiate transcription