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RNA, DNA and Protein Synthesis_

Name ________________________________
Date ________________ Period ___________
Across
______ genes code for transcription factors that activate other genes that are important in cell development and differentiation.
The nearly perfect fit between A-T and G-C nucleotides is known as base ______.
A kind of virus that infects bacteria.
In DNA, Adenine always pairs with ______.
Before a cell divides, it duplicates its DNA in a copying process called _____.
RNA is _____ stranded.
Each tRNA _________ is complementary to one mRNA codon.
A process in which one strain of bacteria is changed by a gene or genes from another strain of bacteria.
Following the "_____" codon, mRNA is read three bases at a time, until it reaches a "stop" codon.
_____ are chemical or physical agents in the environment that may cause a mutation.
RNA contains ____ in place of thymine.
DNA that makes up genes must be capable of storing, copying and _______ the genetic information of a cell.
Watson and ________ built a model that explained the specific structure and properties of DNA.
In DNA guanine always pairs with ______.
The tips of eukaryotic chromosomes are known as ______.
RNA polymerase binds to a _____, a region of a gene where transcription begins.
For replication to begin, the two strands of DNA must first _____.
A _____ is a group of genes that are regulated together.
The sugar in RNA is ____ instead of deoxyribose.
Down
The double-______ model explains Chargaff's rule of base pairing and how two strands of DNA are held together.
_____ expression is the way in which DNA, RNA and proteins are involved in putting genetic information into action in living cells.
______ is a condition in which an organism has an extra sets of chromosomes.
Replication in most prokaryotic cells starts at _____ point and proceeds in two directions until the entire chromosome is copied.
When RNA is edited, portions that are cut out and discarded are called _____.
Because each strand of DNA can be used to make the other strand, the strands are said to be _______.
______ RNA carries information from DNA to other parts of the cell.
DNA is a ______ acid.
The decoding of mRNA into a protein is a process known as ______.
_____ RNA combines with proteins to form ribosomes.
Gene mutations that involve changes in one or a few nucleotides are known as ________ mutations.
Nucleic acid is made up of _________ joined into long strands or chains by covalent bonds.
In _______ segments of DNA serve as templates to produce complementary RNA molecules.
Insertions and deletions are also called _______ mutations.
DNA ______ is an enzyme that joins individual nucleotides to produce a new strand of DNA.
______ RNA carries each amino acid to a ribosome during protein synthesis.
_____ are inheritable changes in genetic information.
DNA has four kinds of nitrogenous _____.
The _____ operon in E. Coli bacteria contains gene for transporting and digesting lactose.
A _____ consists of three consecutive bases that specify a single amino acid to be added to a polypeptide chain.
Nucleotides are made of _____ basic components.
After editing mRNA, the remaining pieces are known as ____.
The _____ gene is a group of genes that determine head to tail identity of body parts in animals.