QUESTION 43 Why is only one strand of DNA transcribed into mRNA? a. Because mRNA is only required in small quantities Ob. Because the other strand would produce the same amino acid sequence in reverse order Oc. Because all genes are located on the same DNA strand, while the other strand acts as protection d. Because the other strand is transcribed directly into amino acids e. Because transcribing both DNA strands would produce different amino acid sequences QUESTION 44 tRNA molecules are able to act as adapters between amino acids and mRNA during translation because: CatRNA binds to ribosomes. b. tRNA can bind to both mRNA and an amino acid c. tRNA anticodons bind to amino acids Od tRNA is recognized by RNA polymerase. etRNA molecules bind to promoter sequences to initiate transcription. QUESTION 45 One of the gyrimidine bases in a DNA molecule is adenine. False se and nubit. Click Save All Aners to save all answers
Molecular Techniques
Molecular techniques are methods employed in molecular biology, genetics, biochemistry, and biophysics to manipulate and analyze nucleic acids (deoxyribonucleic acid (DNA) and ribonucleic acid (RNA)), protein, and lipids. Techniques in molecular biology are employed to investigate the molecular basis for biological activity. These techniques are used to analyze cellular properties, structures, and chemical reactions, with a focus on how certain molecules regulate cellular reactions and growth.
DNA Fingerprinting and Gel Electrophoresis
The genetic makeup of living organisms is shown by a technique known as DNA fingerprinting. The difference is the satellite region of DNA is shown by this process. Alex Jeffreys has invented the process of DNA fingerprinting in 1985. Any biological samples such as blood, hair, saliva, semen can be used for DNA fingerprinting. DNA fingerprinting is also known as DNA profiling or molecular fingerprinting.
Molecular Markers
A known DNA sequence or gene sequence is present on a chromosome, and it is associated with a specific trait or character. It is mainly used as a genetic marker of the molecular marker. The first genetic map was done in a fruit fly, using genes as the first marker. In two categories, molecular markers are classified, classical marker and a DNA marker. A molecular marker is also known as a genetic marker.
DNA Sequencing
The most important feature of DNA (deoxyribonucleic acid) molecules are nucleotide sequences and the identification of genes and their activities. This the reason why scientists have been working to determine the sequences of pieces of DNA covered under the genomic field. The primary objective of the Human Genome Project was to determine the nucleotide sequence of the entire human nuclear genome. DNA sequencing selectively eliminates the introns leading to only exome sequencing that allows proteins coding.
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